In Our Time

Melvyn Bragg and guests discuss the mind/body problem in philosophy. At the start of René Descartes' Sixth Meditation he writes: "there is a great difference between mind and body, inasmuch as body is by nature always divisible, and mind is entirely indivisible. For when I consider the mind, or myself in so far as I am merely a thinking thing, I am unable to distinguish many parts within myself; I understand myself to be something quite single and complete. Although the whole mind seems to be united to the whole body, I recognize that if a foot or an arm or any other part of the body is cut off nothing has thereby been taken away from the mind".This thinking is the basis of what's known as 'Cartesian dualism', Descartes' attempt to address one of the central questions in philosophy, the mind/body problem: is the mind part of the body, or the body part of the mind? If they are distinct, then how do they interact? And which of the two is in charge?With Anthony Grayling, Reader in Philosophy at Birkbeck, University of London; Julian Baggini, editor of The Philosophers' Magazine; Sue James, Professor of Philosophy at Birkbeck, University of London.

Melvyn Bragg and guests discuss the assassination of Tsar Alexander II. On 1st March 1881, the Russian Tsar, Alexander II, was travelling through the snow to the Winter Palace in St Petersburg. An armed Cossack sat with the coach driver, another six Cossacks followed on horseback and behind them came a group of police officers in sledges. It was the day that the Tsar, known for his liberal reforms, had signed a document granting the first ever constitution to the Russian people.But his journey was being watched by a group of radicals called 'Narodnaya Volya' or 'The People's Will'. On a street corner near the Catherine Canal, they hurled the first of their bombs to halt the Tsar's iron-clad coach. When Alexander ignored advice and ventured out onto the snow to comfort his dying Cossacks, he was killed by another bomber who took his own life in the blast.Why did they kill the reforming Tsar? What was the political climate that inspired such extreme acts? And could this have been the moment that the Russian state started an inexorable march towards revolution?With Orlando Figes, Professor of History at Birkbeck College, University of London; Dominic Lieven, Professor of Russian Government, London School of Economics; Catriona Kelly, Professor of Russian, Oxford University.

Melvyn Bragg and guests discuss the rise and eventual downfall of the Roman Republic which survived for 500 years.Around 550 BC, Lucretia, the daughter of an aristocrat, was raped by the son of Tarquin, the King of Rome. Lucretia told her family what had happened to her and then in front of them, killed herself from shame. The Roman historian Livy describes what was believed to have happened next:"Brutus, while the others were absorbed in grief; drew out the knife from Lucretia's wound, and holding it up, dripping with gore, exclaimed, "By this blood, most chaste until a prince wronged it, I swear, and I take you, gods, to witness, that I will pursue Lucius Tarquinius Superbus and his wicked wife and all his children, with sword, with fire, aye with whatsoever violence I may; and that I will suffer neither them nor any other to be king in Rome!". The King was duly expelled from the city and the Roman Republic was founded and lasted for 500 years. But in what form did this republic evolve, what were its values and ideals and what ultimately caused the end of the world’s first true experiment in constitutional government?With Greg Woolf, Professor of Ancient History at St Andrews University; Catherine Steel, Lecturer in Classics at the University of Glasgow; Tom Holland, historian and author of Rubicon: the Triumph and Tragedy of the Roman Republic.

Melvyn Bragg and guests discuss the myth of Faustus." Was this the face that launch'd a thousand ships,And burnt the topless towers of Ilium?Sweet Helen, make me immortal with a kiss!Her lips suck forth my soul: see, where it flies!"So spoke Dr Faustus with unnerving prescience shortly before being dragged off to hell in Christopher Marlowe's historical tragedy. His Faustian pact with the devil Mephistopheles had granted him 24 years of limitless knowledge and power, but at the cost of his soul. His terrible story was told as a dire warning to anyone who would seek to reach beyond the limits of their human lot.Why is Goethe's Faust reprieved, when Marlowe's Faustus gets taken by Satan and what does the story's constant retelling tell us about society's changing attitudes to knowledge, ambition and hellish damnation? But who was the real Faust? Why has his story maintained a 400 year grip on the German and British imaginations, and how has his image changed as each generation embraced the myth?With Juliette Wood, Associate Lecturer in the Department of Welsh at the University College of Wales in Cardiff and Secretary of the Folklore Society; Osman Durrani, Professor of German at the University of Kent at Canterbury; Rosemary Ashton, Quain Professor of English Language and Literature at University College London.

Melvyn Bragg and guests discuss the Second Law of Thermodynamics which can be very simply stated like this: "Energy spontaneously tends to flow from being concentrated in one place to becoming diffused and spread out". It was first formulated – derived from ideas first put forward by Lord Kelvin - to explain how a steam engine worked, it can explain why a cup of tea goes cold if you don't drink it and how a pan of water can be heated to boil an egg.But its application has been found to be rather grander than this. The Second Law is now used to explain the big bang, the expansion of the cosmos and even suggests our inexorable passage through time towards the 'heat death' of the universe. It's been called the most fundamental law in all of science, and CP Snow in his Two Cultures wrote: "Not knowing the Second Law of Thermodynamics is like never having read a work of Shakespeare".What is the Second Law? What are its implications for time and energy in the universe, and does it tend to be refuted by the existence of life and the theory of evolution?With John Gribbin, Visiting Fellow in Astronomy at the University of Sussex; Peter Atkins, Professor of Chemistry at Oxford University; Monica Grady, Head of Petrology and Meteoritics at the Natural History Museum.

Melvyn Bragg and guests discuss the political philosopher Niccolo Machiavelli. In The Prince, Machiavelli's great manual of power, he wrote, "since men love as they themselves determine but fear as their ruler determines, a wise prince must rely upon what he and not others can control". He also advised, "One must be a fox in order to recognise traps, and a lion to frighten off wolves. Those who simply act like lions are stupid. So it follows that a prudent ruler cannot, and must not, honour his word when it places him at a disadvantage".What times was Machiavelli living through to take such a brutal perspective on power? How did he gain the experience to provide this advice to rulers? And was he really the amoral, or even evil figure that so many have liked to paint him?With Quentin Skinner, Regius Professor of History at the University of Cambridge; Evelyn Welch, Professor of Renaissance Studies at Queen Mary, University of London; Lisa Jardine, Director of the Centre for Editing Lives and Letters at Queen Mary, University of London.

Melvyn Bragg and guests discuss the extraordinary mind of the psychiatrist Carl Gustav Jung. In 1907 Sigmund Freud met a young man and fell into a conversation that is reputed to have lasted for 13 hours. That man was the Swiss psychiatrist Carl Gustav Jung. Freud is celebrated as the great pioneer of the 20th century mind, but the idea that personality types can be 'introverted' or 'extroverted', that certain archetypal images and stories repeat themselves constantly across the collective history of mankind, and that personal individuation is the goal of life, all belong to Jung: "Your vision will become clear only when you look into your heart... Who looks outside, dreams. Who looks inside, awakens", he declared. And he also said "Show me a sane man and I will cure him for you".Who was Jung? What is the essence and influence of his thought? And how did he become such a controversial and, for many, such a beguiling figure?With Brett Kahr, Senior Clinical Research Fellow in Psychotherapy and Mental Health at the Centre for Child Mental Health in London and a practising Freudian; Ronald Hayman, writer and biographer of Jung; Andrew Samuels, Professor of Analytical Psychology at the University of Essex and a Jungian analyst in clinical practice.

Melvyn Bragg and guests discuss the Venerable Bede. In 731 AD, in the most far-flung corner of the known universe, a book was written that represented a height of scholarship and erudition that was not to be equalled for centuries to come. It was called the Ecclesiastical History of the Angle Peoples and its author was Bede. A long way from Rome, in a monastery at Jarrow in the North East of England, his works cast a light across the whole of Western Civilisation and Bede became a bestseller, an internationally renowned scholar and eventually a saint. His Ecclesiastical History has been in copy or in print ever since it was written in the eighth century and his edition of the Bible remains the Catholic Church's most authoritative Latin version to this day.How did Bede achieve such ascendancy from such an obscure part of Christendom? And what was so remarkable about his work?With Richard Gameson, Reader in Medieval History at the University of Kent at Canterbury; Sarah Foot, Professor of Early Medieval History at the University of Sheffield; Michelle Brown, a manuscript specialist from the British Library.

Melvyn Bragg and guests discuss the Higgs Boson particle. One weekend in 1964 the Scottish scientist Peter Higgs was walking in the Cairngorm Mountains. On his return to his laboratory in Edinburgh the following Monday, he declared to his colleagues that he had just experienced his 'one big idea' and now had an answer to the mystery of how matter in the universe got its mass. That big idea took many years of refining, but it has now generated so much international interest and has such an important place in physics that well over one billion pounds is being spent in the hope that he was right. It's the biggest science project on Earth; the quest to find the 'Higgs Boson', a fundamental constituent of nature that - if it does exist - has such a central role in defining the universe that it's also known as the God Particle.What is the Higgs Boson? Why is it so important to scientists and how are they planning to find it?With Jim Al-Khalili, Senior Lecturer in Physics at the University of Surrey; David Wark, Professor of Experimental Physics at Imperial College London and the Rutherford Appleton Laboratory; Professor Roger Cashmore, former Research Director at CERN and now Principal of Brasenose College, Oxford.

Melvyn Bragg and guests discusses Zoroastrianism. "Now have I seen him with my own eyes, knowing him in truth to be the wise Lord of the good mind and of good deeds and words." Thus spake the real Zarathustra, the prophet and founder of the ancient and modern religion of Zoroastrianism. It has claims to be the world's first monotheistic creed and perhaps as long ago as 1200 BC Zarathustra also said, "I point out the way, it is the truth, it is for all living". Truth is a central tenet of the religion which holds that people must above all do good things, hear good things and see good things.How was the religion established in Ancient Persia, what is its body of beliefs and how have they been developed and disseminated?With Vesta Sarkhosh Curtis, Curator of Ancient Iranian Coins in the Department of Coins and Medals at the British Museum; Farrokh Vajifdar, Fellow of the Royal Asiatic Society; Alan Williams, Senior Lecturer in Comparative Religion at the University of Manchester.

Melvyn Bragg and guests discuss the dawn of the age of electricity. In Gulliver's Travels, published in 1726, Jonathan Swift satirised natural philosophers as trying to extract sunbeams from cucumbers. Perhaps he would have been surprised, or even horrified, by the sheer force of what these seemingly obscure experimentalists were about to unleash on society. Electricity soon reached into all areas of 18th century life, as Royal Society Fellows vied with showmen and charlatans to reveal its wonders to the world. It was, claimed one commentator, 'an entertainment for Angels rather than for Men'. Electricity also posed deep questions about the nature of life. For some it was the divine spark that animated all things, for others it represented a dangerous materialism that reduced humans to mere machines.But how did electricity develop in the 18th and 19th centuries? Why was it so politically contentious and how was it understood during the age in which it changed the world forever?With Simon Schaffer, Professor in History and Philosophy of Science at the University of Cambridge and a Fellow of Darwin College; Patricia Fara, historian of science and a Fellow of Clare College, Cambridge; Iwan Morus, Lecturer in the History of Science at Queen's University Belfast.

Melvyn Bragg and guests discuss witchcraft in Reformation Europe. In 1486 a book was published in Latin, it was called Maleus Mallificarum and it very soon outsold every publication in Europe bar the Bible. It was written by Heinrich Kramer, a Dominican Priest and a witchfinder. "Magicians, who are commonly called witches" he wrote, "are thus termed on account of the magnitude of their evil deeds. These are they who by the permission of God disturb the elements, who drive to distraction the minds of men, such as have lost their trust in God, and by the terrible power of their evil spells, without any actual draught or poison, kill human beings.""Thou shalt not suffer a witch to live" says Exodus, and in the period of the Reformation and after, over a hundred thousand men and women in Europe met their deaths after being convicted of witchcraft.Why did practices that had been tolerated for centuries suddenly become such a threat? What brought the prosecutions of witchcraft to an end, and was there anything ever in Europe that could be truly termed as a witch?With Alison Rowlands, Senior Lecturer in European History at the University of Essex; Lyndal Roper, Fellow and Tutor in History at Balliol College, University of Oxford; Malcolm Gaskill, Fellow and Director of Studies in History at Churchill College, Cambridge.

Melvyn Bragg and guests discusses rhetoric. Gorgias, the great sophist philosopher and master of rhetoric said, "Speech is a powerful lord that with the smallest and most invisible body accomplished most godlike works. It can banish fear and remove grief, and instil pleasure and enhance pity. Divine sweetness transmitted through words is inductive of pleasure and reductive of pain". But for Plato it was a vice, and those like Gorgias who taught rhetoric were teaching the skills of lying in return for money and were a great danger. He warned "this device - be it which it may, art or mere artless empirical knack - must not, if we can help it, strike root in our society".But strike root it did, and there is a rich tradition of philosophers and theologians who have attempted to make sense of it.How did the art of rhetoric develop? What part has it played in philosophy and literature? And does it still deserve the health warning applied so unambiguously by Plato?With Angie Hobbs, Lecturer in Philosophy at the University of Warwick; Thomas Healy, Professor of Renaissance Studies at Birkbeck College, University of London; Ceri Sullivan, Senior Lecturer in English at the University of Wales, Bangor.

Melvyn Bragg and guests discuss the Han Synthesis philosophies of China. In The Analects the Chinese sage Confucius says of statecraft: "He who exercises government by means of his virtue may be compared to the north polar star, which keeps its place and all the stars turn to it".Confucianism had been all but outlawed under the Chin Emperor, but in 206 BC the Han dynasty came to power and held sway for over 400 years. They brought Confucian thought to the heart of government, his favourite books became set texts for the world's first civil service exam and in a grand intellectual project 'The Great Tao' was combined with 'The Five Phases' and with the Yin and the Yang.Who were the Han? How did they bring these strands of thought together into the great founding moment of Chinese culture? And what drove them to their extraordinary intellectual task?With Christopher Cullen, Director of the Needham Research Institute; Carol Michaelson, Assistant Keeper of Chinese Art in the Department of Asia at the British Museum; Roel Sterckx, Lecturer in Chinese Studies at the University of Cambridge.

Melvyn Bragg and guests discuss Jean-Paul Sartre, the French novelist, playwright, and philosopher who became the king of intellectual Paris and a focus of post war politics and morals. Sartre's own life was coloured by jazz, affairs, Simone de Beauvoir and the intellectual camaraderie of Left Bank cafes. He maintained an extraordinary output of plays, novels, biographies, and philosophical treatises as well as membership of the communist party and a role in many political controversies. He produced some wonderful statements: "my heart is on the left, like everyone else's", and "a human person is what he is not, not what he is", and, most famously "we are condemned to be free". Melvyn Bragg and guests discuss how Sartre's novels and plays express his ideas and what light Sartre's life brings to bear on his philosophy and his philosphy on his life. With Jonathan Rée, philosopher and historia; Benedict O'Donohoe, Principal Lecturer in French at the University of the West of England and Secretary of the UK Society for Sartrean Studies; Christina Howells, Professor of French at the University of Oxford and a Fellow of Wadham College.

Melvyn Bragg and guests discuss the idea of Politeness. A new idea that stalked the land at the start of the eighteenth century in Britain, Politeness soon acquired a philosophy, a literature and even a society devoted to its thrall. It may seem to represent the very opposite now, but at that time, when Queen Anne was on the throne and The Spectator was in the coffee houses, politeness was part of a radical social revolution.How did the idea of politeness challenge the accepted norms of behaviour? How did a notion of how to behave affect the great wealth of eighteenth century culture? With Amanda Vickery, Reader in History at Royal Holloway, University of London; David Wootton, Professor of History at the University of York; John Mullan, Senior Lecturer in English at University College London.

Melvyn Bragg and guests discuss the emergence of the world’s first organic matter nearly four billion years ago. Scientists have named 1.5 million species of living organism on the land, in the skies and in the oceans of planet Earth and a new one is classified every day. Estimates of how many species remain to be discovered vary wildly, but science accepts one categorical point – all living matter on our planet, from the nematode to the elephant, from the bacterium to the blue whale, is derived from a single common ancestor. What was that ancestor? Did it really emerge from a ‘primordial soup’? And what, in the explanation of evolutionary science, provided the catalyst to start turning the cycle of life?With Richard Dawkins, Charles Simonyi Professor of the Public Understanding of Science at Oxford University; Richard Corfield, Visiting Senior Lecturer at the Centre for Earth, Planetary, Space and Astronomical Research at the Open University; Linda Partridge, Biology and Biotechnology Research Council Professor at University College London.

Melvyn Bragg and guests discuss the Battle of Agincourt."Owre kynge went forth to Normandy, With grace and myyt of chivalry; The God for hym wrouyt marvelously, Wherefore Englonde may calle, and cry Deo gratias: Deo gratias redde pro victoria." The great victory was Agincourt as described in the Agincourt Carol, when the 'happy few' of the English army of King Henry V vanquished the French forces on St Crispin's Day 1415. It is a battle that has resounded through the centuries and has been used by so many to mean so much. But how important was the battle in the strategic struggles of the time? What were the pressures at home that drove Henry's march through France? And what is the cultural legacy of Agincourt? With Anne Curry, Professor of Medieval History at Southampton University; Michael Jones, medieval historian and writer; John Watts, Fellow and Tutor in Modern History at Corpus Christie College, Oxford.

Melvyn Bragg and guests discuss The Odyssey by Homer, often claimed as the great founding work of Western Literature. It's an epic that has entertained its audience for nearly three thousand years: It has shipwrecks, Cyclops, brave heroes and seductive sex goddesses. But it’s also got revenge, true love and existential angst. The story follows on from Homer's Iliad, and tells of the Greek hero Odysseus and his long attempt to get home to Ithaca after the Trojan War. Melvyn Bragg and guests discuss what has given the Odyssey such a fundamental position in the history of western ideas, what are the meanings behind the trials and tribulations that befall Odysseus and how the Odyssey was composed and by whom. With Simon Goldhill, Professor of Greek at King's College, Cambridge; Edith Hall, Leverhulme Professor of Greek Cultural History at Durham University; Oliver Taplin, Classics Scholar and Translator at Oxford University.

Melvyn Bragg and guests discuss the history of the most detailed number in nature. In the Bible's description of Solomon's temple it comes out as three, Archimedes calculated it to the equivalent of 14 decimal places and today's super computers have defined it with an extraordinary degree of accuracy to its first 1.4 trillion digits. It is the longest number in nature and we only need its first 32 figures to calculate the size of the known universe within the accuracy of one proton. We are talking about Pi, 3.14159 etc, the number which describes the ratio of a circle's diameter to its circumference. How has something so commonplace in nature been such a challenge for maths? And what does the oddly ubiquitous nature of Pi tell us about the hidden complexities of our world? With Robert Kaplan, co-founder of the Maths Circle at Harvard University, Eleanor Robson, Lecturer in the Department of History and Philosophy of Science at Cambridge University; and Ian Stewart, Professor of Mathematics at the University of Warwick.

Melvyn Bragg and guests discuss the first President of the US, George Washington, and the people and ideas that caused the American Revolution. In 1774 a tobacco farmer from Virginia with nice manners and a quiet lifestyle was moved to put himself forward as the military leader of the most massive rebellion the British Empire had ever suffered. George Washington had been a stout upholder of the status quo, regularly lending money to his ne’r-do-well neighbour simply to keep him in the plantation to which he had become accustomed. He even wrote a book on how to behave properly in polite society.What drove mild mannered George Washington to revolution? Washington may have been a moral man, but by anyone’s account he was no scholar, so who provided the intellectual inspiration behind that grandest of Enlightenment documents, the American Constitution. With Carol Berkin, Professor of History at The City University of New York; Simon Middleton, Lecturer in American History at the University of East Anglia; and Colin Bonwick, Professor Emeritus in American History at Keele University.

Melvyn Bragg and guests discuss Renaissance obsession with Magic. In 1461 one of the powerful Medici family’s many agents carried a mysterious manuscript into his master’s house in Florence. It purported to be the work of an ancient Egyptian priest-king and magician called Hermes Trismegistus. When Cosimo de Medici saw the new discovery, he ordered his translations of Plato to be stopped so that work could begin on the new discovery at once. Hermes promised secret knowledge to his initiates and claimed to have spoken with the spirits and turned base metal into gold. His ideas propelled natural magic into the mainstream of Renaissance intellectual thought, as scholars and magi vied to understand the ancient secrets that would bring statues to life and call the angels down from heaven.But why did magic appeal so strongly to the Renaissance mind? And how did the scholarly Magus, who became a feature of the period, manage to escape prosecution and relate his work to science and the Church?With Peter Forshaw, Lecturer in Renaissance Philosophies at Birkbeck, University of London; Valery Rees, Renaissance historian and a translator of Ficino’s letters; Jonathan Sawday, Professor of English Studies at the University of Strathclyde.

Melvyn Bragg and guests discuss Empiricism, England’s greatest contribution to philosophy. At the end of the seventeenth century the philosopher John Locke wrote in his Essay Concerning Human Understanding: “All ideas come from sensation or reflection. Let us then suppose the mind to be, as we say, white paper, void of all characters, without any ideas:- How comes it to be furnished? Whence comes it by that vast store which the busy and boundless fancy of man has painted on it with an almost endless variety? Whence has it all the materials of reason and knowledge? To this I answer, in one word, from EXPERIENCE.”It was a body of ideas that for Voltaire, and for Kant after him, defined the English attitude to thought; a straight talking pragmatic philosophy that was hand in glove with a practical people.How was the philosophy of empiricism developed in the seventeenth and eighteenth centuries? And what effect did this emphasis on experience have on culture and literature in Britain?With Judith Hawley, Senior Lecturer in English at Royal Holloway, University of London; Murray Pittock, Professor of Scottish and Romantic Literature at the University of Manchester; Jonathan Rée, philosopher and author of Philosophy and its Past.

Melvyn Bragg and guests discuss the truth about Babylon. Six thousand years ago, between the Tigris and the Euphrates, the first cities were being built. The great empire to spring from the region was Babylon, which held sway for over a thousand years and in that time managed to garner an extraordinarily bad press: it’s associated with the Tower of Babel, with Nineveh where Jonah is sent to preach repentance and, perhaps most famously, with “Mystery, Babylon the Great, the Mother of Harlots and Abominations of the Earth” - the whore of Babylon, who in Revelation is taken to personify the city itself. It’s not just the Bible; Herodotus described the Babylonians as effeminate, lascivious and decadent as well.But what is the true story? Classics in this country has meant a study of Greece and Rome, but there is an increasingly vocal contingent that claims that Babylonian culture has been hugely undervalued, and that there is a great wealth of extraordinary literature waiting to be translated.With Eleanor Robson, Lecturer in the History and Philosophy of Science at Cambridge University; Irving Finkel, Curator in the Department of the Ancient Near East at the British Museum; Andrew George, Professor of Babylonian at the School of Oriental and African Studies.

Melvyn Bragg and guests discuss our knowledge of the planets in both our and other solar systems. Tucked away in the outer Western Spiral arm of the Milky Way is a middle aged star, with nine, or possibly ten orbiting planets of hugely varying sizes. Roughly ninety-two million miles and third in line from that central star is our own planet Earth, in thrall to our Sun, just one of the several thousand million stars that make up the Galaxy.Ever since Galileo and Copernicus gave us a scientific model of our own solar system, we have assumed that somewhere amongst the myriad stars there must be other orbiting planets, but it took until 1995 to find one. ‘51 Pegasus A’ was discovered in the Pegasus constellation and was far bigger and far closer to its sun than any of our existing theories could have predicted. Since then 121 new planets have been found. And now it is thought there may be more planets in the skies than there are stars.What causes a planet to form? How do you track one down? And how likely is there to be another one out there with properties like the Earth’s?With Paul Murdin, Senior Fellow at the Institute of Astronomy in Cambridge; Hugh Jones, planet hunter and Reader in Astrophysics at Liverpool John Moores University; Carolin Crawford, Royal Society Research Fellow at the Institute of Astronomy in Cambridge.

Melvyn Bragg and guests discuss the ideas and politics behind the idea of religious toleration. In 1763 Voltaire remarked that "of all religions, the Christian is undoubtedly that which should instil the greatest toleration, although so far the Christians have been the most intolerant of all men". Christian intolerance was brutally enforced across Western Europe in the Middle Ages and the Reformation, with inquisitions, executions, church courts and brandings with hot irons. But during the English Civil War a variety of Christian sects sprang up which challenged the imposition of state religion and opened the floodgates to religious diversity.What were the politics and philosophy behind the idea of toleration in England? Did the rise of toleration go hand in hand with the rise of the secular, or were tolerationists – in fact – deeply religious? And how does toleration differ from tolerance?With Justin Champion, Professor of the History of Early Modern Ideas at Royal Holloway, University of London; David Wootton, Professor of Intellectual History at Queen Mary, University of London; Sarah Barber, Senior Lecturer in History at Lancaster University.

Melvyn Bragg and guests discuss the history of the number between 1 and -1, which has strange and uniquely beguiling qualities. Shakespeare’s King Lear warned, “Nothing will come of nothing”. The poet and priest John Donne said from the pulpit, “The less anything is, the less we know it: how invisible, unintelligible a thing is nothing”, and the English monk and historian William of Malmesbury called them “dangerous Saracen magic”. They were all talking about zero, the number or symbol that had been part of the mathematics in the East for centuries but was finally taking hold in Europe.What was it about zero that so repulsed their intellects? How was zero invented? And what role does zero play in mathematics today?With Robert Kaplan, co-founder of the Maths Circle at Harvard University and author of The Nothing That Is: A Natural History of Zero; Ian Stewart, Professor of Mathematics at the University of Warwick; Lisa Jardine, Professor of Renaissance Studies at Queen Mary, University of London.

Melvyn Bragg and guests discuss what defines a hero and what place they had in classical society. On the fields of Troy a fallen soldier pleaded with Achilles, the great hero of the Greeks, to spare his life. According to Homer, Achilles replied, “Do you not see what a man I am, how huge, how splendid.And born of a great father and the mother who bore me immortal?Yet even I have also my death and strong destiny, And there shall be a dawn or an afternoon or a noontime,When some man in the fighting will take the life from me alsoEither with a spear cast or an arrow flown from the bow string”.With that, he killed him. Heroes have special attributes, but not necessarily humility or compassion. How did the Greeks define their heroes? What place did the hero have in classical society and what do modern ideas of heroism owe to the heroes of the golden age?With Angie Hobbs, Lecturer in Philosophy at the University of Warwick and author of Plato and the Hero: Courage, Manliness and the Impersonal Good; Anthony Grayling, Reader in Philosophy at Birkbeck College, University of London; Paul Cartledge, Professor of Greek History at the University of Cambridge.

Melvyn Bragg and guests discuss tea, the first truly global commodity. After air and water, tea is the most widely consumed substance on the planet and the British national drink. In this country it helped define class and gender, it funded wars and propped up the economy of the Empire. The trade started in the 1660s with an official import of just 2 ounces, by 1801 24 million pounds of tea were coming in every year and people of all classes were drinking an average two cups a day. It was the first mass commodity, and the merchant philanthropist Jonas Hanway decried its hold on the nation, “your servants' servants, down to the very beggars, will not be satisfied unless they consume the produce of the remote country of China”.What drove the extraordinary take up of tea in this country? What role did it play in the global economy of the Empire and at what point did it stop becoming an exotic foreign luxury and start to define the essence of Englishness?With Huw Bowen, Senior Lecturer in Economic and Social History at the University of Leicester; James Walvin, Professor of History at the University of York; Amanda Vickery, Reader in History at Royal Holloway, University of London.

Melvyn Bragg and guests discuss a problematic notion which can be an emotional condition, a syndrome, an extreme or over-reaction, or the physical signs of trauma. The term ‘hysteria’ was first used in Greece in the 5th century BC by Hippocratic doctors. They were trying to explain an illness whose symptoms were breathing difficulties and a sense of suffocation, and whose sufferers were seen chiefly to be recently bereaved widows. The explanation was thought to be a wandering womb putting pressure on other organs. The use that Sigmund Freud put to the term was rather different, but although there is no wandering womb in his notion of hysteria, there is still a mysterious leap from the emotional to the physical, from the mind to the body. What is hysteria? How can emotional experiences cause physical illnesses? And has hysteria’s association with old stereotypes of femininity put it off the modern medical map? With Juliet Mitchell, Professor of Psychoanalysis and Gender Studies at the University of Cambridge and author of Mad Men and Medusas: Reclaiming Hysteria and the Effects of Sibling Relations on the Human Condition; Rachel Bowlby, Professor of English at the University of York who has written the introduction to the latest Penguin translation of Sigmund Freud and Joseph Breuer’s Studies in Hysteria; Brett Kahr, Senior Clinical Research Fellow in Psychotherapy and Mental Health at the Centre for Child Mental Health in London.

Melvyn Bragg and guests discuss the poetry, the tragedy and the idealism of the Later Romantics. There must have been something extraordinary about the early 19th century, when six of the greatest poets in the English language were all writing. William Blake was there and Wordsworth and Coleridge had established themselves as the main players in British poetry, when the youthful trio of Byron, Shelley and Keats erupted – if not straight onto the public stage, then at least onto the literary scene. The great chronicler of the age was William Hazlitt, whose romantic maxim was: “Happy are they who live in the dream of their own existence and see all things in the light of their own minds; who walk by faith and hope; to whom the guiding star of their youth still shines from afar and into whom the spirit of the world has not yet entered…the world has no hand on them.” How fitting an epitaph is that for the three great poets who all died tragically young? What were the ideals that drove them and how did their unconventional lifestyles infect the poetry they left behind?With Jonathan Bate, Professor of English Literature at the University of Warwick; Robert Woof, Director of the Wordsworth Trust; Jennifer Wallace, Director of Studies in English at Peterhouse, Cambridge.

Melvyn Bragg and guests discuss the concept of original sin and its influence in Christian Europe. Genesis tells the Bible’s story of creation, but it also carries within it a tale of the ‘fall of mankind’. After their primal transgression, Adam and Eve are banished from Eden and cursed by God:“Unto the woman he said, I will greatly multiply thy sorrow and thy conception; in sorrow thou shalt bring forth children; and thy desire shall be to thy husband, and he shall rule over thee.And unto Adam he said, Because thou hast hearkened unto the voice of thy wife, and hast eaten of the tree, of which I commanded thee, saying, Thou shalt not eat of it: cursed is the ground for thy sake; in sorrow shalt thou eat of it all the days of thy life.”What effect has this passage had on western culture, and how did the concept of an ‘original sin’ influence gender and morality in Christian Europe?With Martin Palmer, theologian and Director of the International Consultancy on Religion, Education and Culture; Griselda Pollock, Professor of Art History at the University of Leeds; John Carey, Emeritus Professor of English Literature at Oxford University.

Melvyn Bragg and guests discuss the astonishing productivity of the Chinese Golden Age. 400 BC to 200 AD is known as the Axial Age, when great civilisations in Asia and the Mediterranean forged the ideas that dominated the next two thousand years. In China the equivalent to the Golden Age in Greece was the Warring States Period. It was a time of political turmoil, economic change and intellectual ferment that laid the foundations for the first Chinese Empire. Astronomy was systematised, the principles of Yin and Yang were invented, Confucianism grew and Taoism emerged, as a hundred schools of thought are reputed to have vied for the patronage of rival kings.Why was a period of war such a fertile age for culture and thought, what kinds of ideas were developed and how do they still inform the thinking of nearly a fifth of the world’s population?With Dr Chris Cullen, Director of the Needham Research Institute at Cambridge University; Dr Vivienne Lo, Lecturer at the Wellcome Trust Centre for the History of Medicine; Carol Michaelson, Assistant Keeper of Chinese Art in the Department of Oriental Antiquities at the British Museum.

Melvyn Bragg and guests discuss the 30 year search to solve all the biggest questions in physics. At the end of the last century, brave voices were predicting that all the big questions of physics were on the verge of being answered by a Theory of Everything. The disparity between the physics of the very small would finally be reconciled with the very large, and the four forces of nature would finally be united with a single set of equations. It was suggested that with such a theory we might solve the riddle of black holes, unlock the secrets of the Big Bang, probe other universes and even uncover the mystery of travelling through time. But Stephen Hawking, who once said that with a Theory of Everything “we would know the mind of God”, has changed his mind and now says that it may not be possible after all. So what are the prospects for a Theory of Everything? Why do we need one? How do we get one? And what would it mean if we did? With Brian Greene, Professor of Physics and Mathematics at Columbia University and author of The Fabric of the Cosmos; John Barrow, Professor of Mathematical Sciences at the University of Cambridge and author of The Constants of Nature; Dr Val Gibson, particle physicist from the Cavendish Laboratory and Fellow of Trinity College, Cambridge.

Melvyn Bragg and guests discuss the Vikings’ myths. Thor’s huge hammer, the wailing Valkyrie, howling wolves and fierce elemental giants give a rowdy impression of the Norse myths. But at the centre of their cosmos stands a gnarled old Ash tree, from which all distances are measured and under which Valhalla lies. In the first poem of The Poetic Edda, where the stories of the Norse Gods are laid down in verse, the Seeress describes it in her prophesy: “I know that an ash-tree stands called Yggdrasil,a high tree soaked with shining loamfrom there come the dews which fall in the valley, ever green, it stands over the well of fate.” It is from this tree that the father of the Gods, Odin, will ultimately hang himself: an image of divine sacrifice so problematic for thirteenth century Christians that they left it out when they wrote the myths down.What was the theology that inspired the Vikings and what role did their myths and religion play in their daily lives?With Carolyne Larrington, Tutor in Medieval English at St John’s College, Oxford; Heather O’Donoghue, Vigfusson Rausing Reader in Ancient Icelandic Literature in the Department of English at Oxford University; John Hines, Professor of Archaeology at Cardiff University.

Melvyn Bragg and guests discuss the interpretation of dreams. Over a hundred years ago, Sigmund Freud declared confidently, “The interpretation of dreams is the royal road to a knowledge of the unconscious activities of the mind”. He was writing in his famous volume, The Interpretation of Dreams and his ideas made a huge impact on the century that was to follow. However, despite the cultural influence of his work, there is still no agreement in neuroscience as to the function or mechanism of dreaming; this is partly because for much of the century the prevailing wisdom was that there was no meaning to dreams at all.What is the mental circuitry that creates our dreams? If they have no meaning, why do we dream them? And why is the tide turning with neuroscientists starting to find reasons to take dreams seriously again?With Professor V S Ramachandran, Director of the Center for Brain and Cognition at the University of California, San Diego; Mark Solms, Professor of Neuropsychology at the University of Cape Town; Martin Conway, Professor of Psychology at the University of Durham.

Melvyn Bragg and guests discuss the Mughal Empire which, at its height, stretched from Bengal in the East to Gujarat in the West, and from Lahore in the North to Madras in the South. It covered the whole of present day northern India, Pakistan, Afghanistan and Bangladesh, and became famous for the Taj Mahal, the Koh-i-Noor and the Peacock Throne. In 1631 a Dutch naturalist Johannes de Laet published his account of the vast Empire, “the nobles live in indescribable luxury and extravagance, caring only to indulge themselves whilst they can, in every kind of pleasure. Their greatest magnificence is in their women’s quarters, for they marry three or four wives or sometimes more”.But were they really the opulent despots of European imagination? If so, how did they maintain such a vast territory? And to what extent was the success of the British Raj a legacy of their rule? With Sanjay Subrahmanyam, Professor of Indian History and Culture at the University of Oxford; Susan Stronge, Curator in the Asian Department of the Victoria and Albert Museum, London; Chandrika Kaul, Lecturer in Imperial History at the University of St Andrews.

Melvyn Bragg and guests discuss Ernest Rutherford. He was the father of nuclear science, a great charismatic figure who mapped the landscape of the sub-atomic world. He identified the atom’s constituent parts, discovered that elemental decay was the cause of radiation and became the first true alchemist in the history of science when he forced platinum to change into gold. He was born at the edge of the Empire in 1871, the son of Scottish immigrant farmers and was working the fields when a telegram came from the great British physicist J J Thomson asking him to come to Cambridge. Rutherford immediately laid down his spade saying "that’s the last potato I ever dig". It was. He went on to found a science, win a Nobel Prize and pioneer the ‘big science’ of the twentieth century. With Simon Schaffer, Professor in the History and Philosophy of Science at the University of Cambridge; Jim Al–Khalili, Senior Lecturer in Physics at the University of Surrey; Patricia Fara, Fellow of Clare College, Cambridge.

Melvyn Bragg and guests discuss a transcendental idea that took hold on the Age of Enlightenment. When the English essayist John Hall translated the work of an obscure Roman thinker into English, he could hardly have known the ferment it would cause; for the work of Longinus introduced late 17th century Britain to the idea of the sublime – an idea that stalked the proceeding century. Longinus wrote, “As if instinctively, our soul is lifted up by the true sublime; it takes a proud flight, and is filled with joy and vaunting, as though it had itself produced what it had heard”.He was talking about the power of language, but in the 18th century the idea was set for a broader stage as British artists, poets, philosophers and scientists grappled with the sublime and adapted it to great swathes of the intellectual and physical landscape. What drove the great minds of the age to invest so much in the defining of the state of awe?With Janet Todd, Professor of English Literature at the University of Glasgow; Annie Janowitz, Professor of Romantic Poetry at Queen Mary, University of London; Peter de Bolla, Lecturer in English at the University of Cambridge.

Melvyn Bragg and guests discuss the Battle of Thermopylae. For the historian Herodotus, the Battle of Thermopylae was the defining clash between East and West: “The Persians fell in their scores, for the officers stood behind lashing them forward, forward all the time. Many fell into the sea and were drowned, many more were trampled to death by their comrades ... The Greeks knew they were doomed now the Persians had discovered a way round the hill, and put forth their last ounce of strength, utterly desperate, utterly unsparing of their lives. (King) Leonidas fell in this battle. He had proved himself a great and brave man”.A force of three hundred free Spartans and their King had stood and fallen before an invading army of three million, led by a brutal tyrant. Or so the story goes – such was their courage and its association with freedom that, nearly two and a half thousand years later, William Golding wrote, “A little of Leonidas lies in the fact that I can go where I like and write what I like. He contributed to setting us free”.How important are the Greek/Persian wars to the story of democracy? Was the West and its values really so far removed from life in the Persian Empire?With Tom Holland, historian and author of Persian Fire; Simon Goldhill, Professor in Greek Literature and Culture at King’s College, Cambridge; Edith Hall, Leverhulme Professor of Greek Cultural History at the University of Durham and author of Inventing the Barbarian: Greek Self-Definition through Tragedy.

Melvyn Bragg and guests discuss the origins and history of codes. In October 1586, in the forbidding hall of Fotheringhay Castle, Mary Queen of Scots was on trial for her life. Accused of treason and denied legal representation, she sat alone in the shadow of a vast and empty throne belonging to her absent cousin and arch rival Elizabeth I of England. Walsingham, Elizabeth’s Principal Secretary, had already arrested and executed Mary’s fellow conspirators, her only hope lay in the code she had used in all her letters concerning the plot. If her cipher remained unbroken she might yet be saved. Not for the first time the life of an individual and the course of history depended on the arcane art of Cryptography.What are the origins of this secretive science? And what links the ‘Caesar Cipher’ with the complex algorithms which underpin so much of our modern age?With Simon Singh, science writer and author of The Code Book: The Secret History of Codes and Code-Breaking; Professor Fred Piper, Director of the Information Security Group at Royal Holloway, University of London and co-author of Cryptography: A Very Short Introduction; Lisa Jardine, Professor of Renaissance Studies at Queen Mary, University of London and author of Ingenious Pursuits.

Melvyn Bragg discusses Jean-Baptiste Lamarck, the 18th century French scientist.Charles Darwin defined Natural Selection in On the Origin of Species, “Variations, however slight and from whatever cause proceeding, if they be in any degree profitable to the individuals of a species… will tend to the preservation of such individuals, and will generally be inherited by the offspring”. It was a simple idea that had instant recognition, “How extremely stupid not to have thought of that!” said T H Huxley. However, Darwin did not invent the idea of evolution and not everyone saw his ideas as original. The great geologist Charles Lyell repeatedly referred to “Lamarck’s theory as modified by Darwin”, Darwin complained to him, “I believe this way of putting the case is very injurious to its acceptance”. He desperately wanted to escape the shadow of this genuine scientific precursor and what has become known as the ‘Lamarckian Heresy’ has maintained a ghostly presence on the fringes of biology to this day.Who was Lamarck? How did Natural Selection escape from his shadow and gain acceptance from the scientific establishment? And has any evidence emerged that might challenge the elegant simplicity of Darwin’s big idea?With Sandy Knapp, Senior Botanist at the Natural History Museum, Steve Jones, Professor of Genetics in the Galton Laboratory at University College London and author of Almost Like a Whale: The Origin of Species Updated; Simon Conway Morris, Professor of Evolutionary Paleobiology at Cambridge University.

Melvyn Bragg and guests discuss the feat of astonishing intellectual engineering which provides us with millions of words in hundreds of languages. At the start of the twentieth century, in the depths of an ancient Egyptian turquoise mine on the Sinai peninsular, an archaeologist called Sir Flinders Petrie made an exciting discovery. Scratched onto rocks, pots and portable items, he found scribblings of a very unexpected but strangely familiar nature. He had expected to see the complex pictorial hieroglyphic script the Egyptian establishment had used for over 1000 years, but it seemed that at this very early period, 1700 BC, the mine workers and Semitic slaves had started using a new informal system of graffiti, one which was brilliantly simple, endlessly adaptable and perfectly portable: the Alphabet. This was probably the earliest example of an alphabetic script and it bears an uncanny resemblance to our own.Did the alphabet really spring into life almost fully formed? How did it manage to conquer three quarters of the globe? And despite its Cyrillic and Arabic variations and the myriad languages it has been used to write, why is there essentially only one alphabet anywhere in the world? With Eleanor Robson, historian of Ancient Iraq and Fellow of All Souls College, Oxford; Alan Millard, Rankin Professor Emeritus of Hebrew and Ancient Semitic Languages at the University of Liverpool; Rosalind Thomas, Professor of Greek History at Royal Holloway, University of London.

Melvyn Bragg and guests discuss the history of the Devil. In the Gospel according to John he is ‘a murderer from the beginning’, ‘a liar and the father of lies’, and Dante calls him ‘the ill Worm that pierces the world’s core’. But Milton’s description of him as a powerful rebel was so attractive that William Blake declared that Milton was ‘of the Devil’s party, without knowing it’. To ordinary folk the Devil has often been regarded as a trickster, a tempter, sometimes even a figure of fun rather than of fear. How did this contradictory character come into being? Why did it take so long for him to become an established figure in Christianity? And if the Devil did not exist, would we have had to invent him? With Martin Palmer, theologian and Director of the International Consultancy on Religion, Education and Culture; Alison Rowlands, Senior Lecturer in European History at the University of Essex; David Wootton, Professor of Intellectual History at Queen Mary, University of London.

Melvyn Bragg and guests discuss the life, work and legacy of Ludwig Wittgenstein. There is little doubt that he was a towering figure of the twentieth century; on his return to Cambridge in 1929 Maynard Keynes wrote, “Well, God has arrived. I met him on the 5:15 train”.Wittgenstein is credited with being the greatest philosopher of the modern age, a thinker who left not one but two philosophies for his descendents to argue over: The early Wittgenstein said, “the limits of my mind mean the limits of my world”; the later Wittgenstein replied, “If God looked into our minds he would not have been able to see there whom we were speaking of”. Language was at the heart of both. Wittgenstein stated that his purpose was to finally free humanity from the pointless and neurotic philosophical questing that plagues us all. As he put it, “To show the fly the way out of the fly bottle”.How did he think language could solve all the problems of philosophy? How have his ideas influenced contemporary culture? And could his thought ever achieve the release for us that he hoped it would?With Ray Monk, Professor of Philosophy at the University of Southampton and author of Ludwig Wittgenstein: The Duty of Genius; Barry Smith, Lecturer in Philosophy at Birkbeck, University of London; Marie McGinn, Senior Lecturer in Philosophy at the University of York.

Melvyn Bragg and guests discuss the infamous St Bartholomew’s Day Massacre. In Paris, in the high summer of 1572, a very unusual wedding was happening in the cathedral of Notre Dame. Henri, the young Huguenot King of Navarre, was marrying the King of France’s beloved sister, Margot, a Catholic. Theirs was a union designed to bring together the rival factions of France and finally end the French Wars of Religion. Paris was bustling with Huguenots and Catholics and, though the atmosphere was tense, the wedding went off without a hitch. And as they danced together at the Louvre, it seemed that the flower of French nobility had finally come together to bury its differences.That wasn’t to be: on St Bartholomew’s Day, four days after the ill-starred nuptials, so many Protestants were killed in the streets of Paris that the River Seine ran red with their blood. Was the wedding a trap? Who was to blame for the carnage and what impact did it have on the Reformation in Europe?With Diarmaid MacCulloch, Professor of the History of the Church at Oxford University and author of a new book: Reformation: Europe’s House Divided 1490-1700; Mark Greengrass, Professor of History at the University of Sheffield; Penny Roberts, Lecturer in History at the University of Warwick.

Melvyn Bragg and guests discuss the age of the Earth. It was once thought that the world began in 4004 BC. Lord Kelvin calculated the cooling temperature of a rock the size of our planet and came up with a figure of 20 million years for the age of the Earth. Now, the history of our planet is divided into four great Eons: the Hadean, the Archaen, the Proterozoic and the Phanerozoic. Together, they are taken to encompass an incredible four and a half billion years. How can we begin to make sense of such a huge swathe of time? And can we be sure that we have got the Earth's age right? Geologists use Eras, Periods and Epochs to further punctuate what's known as 'Deep Time', but can we be sure that the classifications we use don't obscure more than they reveal? With Richard Corfield, Research Associate in the Department of Earth Sciences at Oxford University; Hazel Rymer, Senior Lecturer in the Department of Earth Sciences at the Open University; Henry Gee, Senior Editor at Nature.

Melvyn Bragg and guests discuss the concept of duty. George Bernard Shaw wrote in his play Caesar and Cleopatra, “When a stupid man is doing something he is ashamed of, he always declares that it is his duty”. But for Horatio Nelson and so many others, duty has provided a purpose for life, and a reason to die – “Thank God I have done my duty” were his final words.The idea that others have a claim over our actions has been at the heart of the history of civilised society, but duty is an unfashionable or difficult notion now - perhaps because it seems to impose an outside authority over self interest. The idea of duty has duped people into doing terrible things and inspired them to wonderful achievements, and it is an idea that has excited philosophers from the time people first came together to live in large groups. But has duty always meant doing what’s best for others rather than oneself? And how did it become such a powerful idea that people readily gave their lives for it? With Angie Hobbs, Lecturer in Philosophy at the University of Warwick; Annabel Brett, Fellow of Gonville and Caius and Lecturer in History at the University of Cambridge; Anthony Grayling, Reader in Philosophy at Birkbeck, University of London.

Melvyn Bragg and guests discuss sensation, a Victorian literary phenomenon. The Archbishop of York fulminated against them in his sermons, they spread panic through the pages of The Times and in a famous review the Oxford Professor of Philosophy, Henry Mansel, called them “unspeakably disgusting” with a “ravenous appetite for carrion”: in the 1860s the novels of Sensation took the Victorian world by storm.Bigamy. Secrecy. Murder and Madness. Detectives and surprise plot twists - all in a genteel domestic setting. It was a compelling concoction that propelled sales of the genre into millions, and for the first time ever got those above stairs reading the same stories as their servants.How did Sensation achieve such an incredible popularity so fast? What did the ensuing moral panic reveal about the society in which the novels were set? And in terms of its literary reputation, does this racy genre deserve to languish so far behind Victorian Realism, its rather steadier cousin?With John Mullan, Senior Lecturer in English at University College London; Lyn Pykett, Professor of English and Pro-Vice Chancellor at the University of Wales, Aberystwyth; Dinah Birch, Professor of English at the University of Liverpool.

Melvyn Bragg and guests discuss the centuries old myth of the most romantic noble outlaw. The first printed version of the Robin Hood story begins like this:“Lithe and Lysten, gentylmen/That be of frebore blodeI shall tell of a good yeman/His name was Robyn Hode/Robyn was a proude outlawe/Whyles he walked on groundeSo curteyse an outlawe as he was one/Was never none yfound”.Robin Hood is described as a ‘yeoman’ – a freeman, and though he is courteous there is not even a hint of the aristocrat he later became. In fact, in the early ballads there is no Maid Marian, no Friar Tuck, Robin does not live in the time of bad Prince John, or the crusades, does not lead a large and merry gang, and certainly never robs the rich to give to the poor. Though he always remains a trickster, and a man with a bow in a wood.Why does this most malleable of myths go through so many changes and so many centuries? And was there ever a real outlaw Robin Hood on whom the ballads, plays, novels and movies are based?With Stephen Knight, Professor of English Literature at Cardiff University and author of Robin Hood: A Mythic Biography; Thomas Hahn, Professor of English Literature at the University of Rochester, New York; Dr Juliette Wood, Secretary of the Folklore Society.