In Our Time

Melvyn Bragg and guests discuss the philosophical ideas of William Ockham including Ockham's Razor. In the small village of Ockham, near Woking in Surrey, stands a church. Made of grey stone, it has a pitched roof and an unassuming church tower but parts of it date back to the 13th century. This means they would have been standing when the village witnessed the birth of one of the greatest philosophers in Medieval Europe. His name was William and he became known as William of Ockham.William of Ockham’s ideas on human freedom and the nature of reality influenced Thomas Hobbes and helped fuel the Reformation. During a turbulent career he managed to offend the Chancellor of Oxford University, disagree with his own ecclesiastical order and get excommunicated by the Pope. He also declared that the authority of rulers derives from the people they govern and was one of the first people so to do. Ockham’s razor is the idea that philosophical arguments should be kept as simple as possible, something that Ockham himsel

Melvyn Bragg and guests discuss the Siege of Orléans, when Joan of Arc came to the rescue of France and routed the English army with the help of God. The perfidious English then burnt her as a heretic in Rouen marketplace. At least that's the story we're told but the truth involves the murky world of French court politics, labyrinthine dynastic claims, mass religious hysteria and English military and political incompetenceLooking back on the events that followed, the Duke of Bedford wrote to King Henry VI and declared “all things prospered for you till the time of the siege of Orleans, taken in hand God knoweth by what advice”.But what happened at the siege of Orleans, did Joan of Arc really rescue the city and how significant was the battle in changing the course of the 100 Years' War and the subsequent histories of England and France?With Anne Curry, Professor of Medieval History at the University of Southampton; Malcolm Vale, Fellow and Tutor in History at St John’s College, Oxford; Matthew Bennett, Seni

Melvyn Bragg and guests discuss mysterious phenomena called Gravitational Waves in contemporary physics. The rather un-poetically named star SN 2006gy is roughly 150 times the size of our sun. Last week it went supernova, creating the brightest stellar explosion ever recorded. But among the vast swathes of dust, gas and visible matter ejected into space, perhaps the most significant consequences were invisible – emanating out from the star like the ripples from a pebble thrown into a pond. They are called Gravitational Waves, predicted by Einstein and much discussed since, their existence has never actually been proved but now scientists may be on the verge of measuring them directly. To do so would give us a whole new way of seeing the cosmos. But what are gravitational waves, why are scientists trying to measure them and, if they succeed, what would a gravitational picture of the universe look like?With Jim Al-Khalili, Professor of Physics at the University of Surrey; Carolin Crawford, Royal Society Researc

Melvyn Bragg and guests discuss Victorian Pessimism. On 1 September 1851 the poet Matthew Arnold was on his honeymoon. Catching a ferry from Dover to Calais, he sat down and worked on a poem that would become emblematic of the fears and anxieties of a generation of Victorians. It is called Dover Beach and it finishes like this: “Ah, love, let us be true To one another! for the world, which seemsTo lie before us like a land of dreams,So various, so beautiful, so new,Hath really neither joy, nor love, nor light,Nor certitude, nor peace, nor help for pain;And we are here as on a darkling plainSwept with confused alarms of struggle and flight,Where ignorant armies clash by night”.From Matthew Arnold’s poem Dover Beach to the malign universe of Thomas Hardy’s novels, an age famed for its forthright sense of progress and Christian belief was also riddled with anxieties about faith, morality and the future of the human race. They were even worried that the sun would soon go out. But to what extent was this pessimis

Melvyn Bragg discusses the Dutch Jewish Philosopher Spinoza. For the radical thinkers of the Enlightenment, he was the first man to have lived and died as a true atheist. For others, including Samuel Taylor Coleridge, he provides perhaps the most profound conception of God to be found in Western philosophy. He was bold enough to defy the thinking of his time, yet too modest to accept the fame of public office and he died, along with Socrates and Seneca, one of the three great deaths in philosophy. Baruch Spinoza can claim influence on both the Enlightenment thinkers of the 18th century and great minds of the 19th, notably Hegel, and his ideas were so radical that they could only be fully published after his death. But what were the ideas that caused such controversy in Spinoza’s lifetime, how did they influence the generations after, and can Spinoza really be seen as the first philosopher of the rational Enlightenment?With Jonathan Rée, historian and philosopher and Visiting Professor at Roehampton University

Melvyn Bragg and guests discuss Greek and Roman love poetry, from the Greek poet Sappho and her erotic descriptions of romance on Lesbos, to the love-hate poems of the Roman writer Catullus. The source of many of the images and metaphors of love that have survived in literature through the centuries. We begin with the words of Sappho, known as the Tenth Muse and one of the great love poets of Ancient Greece: “Love, bittersweet and inescapable, creeps up on me and grabs me once again”Such heartfelt imploring by Sappho and other writers led poetry away from the great epics of Homer and towards a very personal expression of emotion. These outpourings would have been sung at intimate gatherings, accompanied by the lyre and plenty of wine. The style fell out of fashion only to be revived first in Alexandria in the third Century BC and again by the Roman poets starting in the 50s BC. Catullus and his peers developed the form, employing powerful metaphors of war and slavery to express their devotion to their Beloved

Melvyn Bragg and guests discuss symmetry. Found in Nature - from snowflakes to butterflies - and in art in the music of Bach and the poems of Pushkin, symmetry is both aesthetically pleasing and an essential tool to understanding our physical world. The Greek philosopher Aristotle described symmetry as one of the greatest forms of beauty to be found in the mathematical sciences, while the French poet Paul Valery went further, declaring; “The universe is built on a plan, the profound symmetry of which is somehow present in the inner structure of our intellect”.The story of symmetry tracks an extraordinary shift from its role as an aesthetic model - found in the tiles in the Alhambra and Bach's compositions - to becoming a key tool to understanding how the physical world works. It provides a major breakthrough in mathematics with the development of group theory in the 19th century. And it is the unexpected breakdown of symmetry at sub-atomic level that is so tantalising for contemporary quantum physicists.So wh

Melvyn Bragg discusses the Opium Wars, a series of conflicts in the 19th Century which had a profound effect on British Chinese relations for generations. Thomas De Quincey describes the pleasures of opium like this: “Thou hast the keys of Paradise, O just, subtle and mighty opium”. The Chinese had banned opium in its various forms several times, citing concern for public morals, but private British traders continued to smuggle large quantities of opium into China from India. In this way, the opium trade became a way of balancing a trade deficit brought about by Britain's own addiction...to Indian tea.The Chinese protested against the flouting of the ban, even writing to Queen Victoria. But the British continued to trade, leading to a crackdown by Lin Tse-Hsu, a man appointed to be China's Opium Drugs Czar. He confiscated opium from the British traders and destroyed it. The British military response was severe, leading to the Nanking Treaty which opened up several of China's ports to foreign trade and gave Br

Melvyn Bragg and guests discuss the 7th century saint, Hilda, or Hild as she would have been known then, wielded great religious and political influence in a volatile era. The monasteries she led in the north of England were known for their literacy and learning and produced great future leaders, including 5 bishops. The remains of a later abbey still stand in Whitby on the site of the powerful monastery she headed there. We gain most of our knowledge of Hilda's life from The Venerable Bede who wrote that she was 66 years in the world, living 33 years in the secular life and 33 dedicated to God. She was baptised alongside the king of Northumbria and with her royal connections, she was a formidable character. Bede writes: “Her prudence was so great that not only indifferent persons but even kings and princes asked and received her advice”. Hild and her Abbey at Whitby hosted the Synod which decided when Easter would be celebrated, following a dispute between different traditions. Her achievements are all the m

Melvyn Bragg and guests discuss the history of anaesthetics, from laughing gas in the 1790s to the discovery of “blessed chloroform”. Remembering his unsuccessful stint at Edinburgh Medical school Charles Darwin described the horrors of surgery before anaesthetics : "I attended the operating theatre and saw two very bad operations... but I rushed away before they were completed. Nor did I ever attend again, for hardly any inducement would have been strong enough to make me do so; this being long before the blessed days of chloroform. The two cases fairly haunted me for many a long year."The suffering Darwin witnessed is almost unimaginable. In the 19th Century, a simple fracture often led to amputation carried out on a conscious patient, whose senses would be dulled only by brandy or perhaps some morphine. Many patients died of shock.The properties of gases like nitrous oxide or “laughing gas” held out hope. The chemist Humphrey Davy in the 1790s described it as “highly pleasurable, thrilling”. He also notice

Melvyn Bragg and guests discuss the original Iron Chancellor, Otto Von Bismarck. One of Europe's leading statesmen in the 19th Century he is credited with unifying Germany under the military might of his home state of Prussia. An enthusiastic expansionist, Bismarck undertook a war against Denmark that has become a by-word for incomprehensible conflict. The British Prime Minister, Lord Palmerston, said: “The Schleswig-Holstein question is so complicated, only three men in Europe have ever understood it. One was Prince Albert, who is dead. The second was a German professor who became mad. I am the third and I have forgotten all about it.”After vanquishing Austria and France, Bismark led the new industrialising Germany, managing to remain in power for a further two decades. Bismarck said: “The art of statesmanship is to steer a course on the stream of time” and he founded one of Europe's first welfare states but he was also known for his ruthless tactics, ignoring democratic institutions, dabbling in dirty polit

Melvyn Bragg and guests discuss the great 18th Century fashion for epistolary literature. From its first appearance in the 17th Century with writers like Aphra Behn, epistolary fiction, fiction in the form of letters, reached its heyday in the 18th Century with works like Clarissa by Samuel Richardson. At over a million words, it's a contender for the longest English novel. It inspired impassioned followers such as Denis Diderot who described reading Richardson's novels like this: “In the space of a few hours I had been through a host of situations which the longest life can scarcely provide in its whole course. I had heard the genuine language of the passions; I had seen the secret springs of self-interest and self-love operating in a hundred different ways: I had become privy to a multitude of incidents and I felt I had gained in experience.”This sense of the reader gaining a privileged peek into the psychology of the protagonists was a key device of the epistolary form and essential to the development of t

Melvyn Bragg and guests discuss the history of microbiology. We have more microbes in our bodies than we have human cells. We fear them as the cause of disease, yet are reliant on them for processes as diverse as water purification, pharmaceuticals, bread-making and brewing. In the future, we may look to them to save the planet from environmental hazards as scientists exploit their ability to clean up pollution. For microbes are the great recyclers on the earth, processing everything – plants, animals and us. Without microbes life would grind to a halt. How did we first discover these invisible masters of the universe? The development of microscopes in the 17th Century played a key part, but for a while science seemed stuck in this purely observational role. It is only when Louis Pasteur and Robert Koch began to manipulate microbes in the lab two hundred years later that stunning advances were made. These breakthroughs led to an understanding of how microbes transform matter, spread disease and also prevent i

Melvyn Bragg and guests discuss the history of optics. From telescopes to microscopes, from star-gazing to the intimacies of a magnified flea. As Galileo turned his telescope to the heavens in the early 1600s, Kepler began to formulate a theory of optics. The new and improving instruments went hand in hand with radical new ideas about how we see and what we see. Spectacles allowed scholars to study long into the evening (and into old age), while giant telescopes, up to 100 feet long, led to the discovery of planets and attempts to map the universe. The craze for optical trickery swept Europe with enthusiastic amateurs often providing valuable discoveries. But this new view of the world through a lens raised questions too – how much can you rely on the senses, on what you see? The further into space you can spy, the larger and more unmanageable the universe becomes. At the same time, the microscope was utterly transforming the world close at hand.So how did these developments inform ideas of knowledge? If new

Melvyn Bragg will be discussing Joseph Conrad’s Heart of Darkness. Written in 1899, Heart of Darkness is a fascinating fin de siecle critique of colonialism and man's greed. Conrad draws on his own adventures for the plot. The story's main narrator is Marlow, a merchant seaman who pilots a steamship upriver in what is largely assumed to be the Belgian Congo. He finds the scramble for Africa well underway, with Europeans desperately competing to make their fortunes from ivory. Marlow's journey takes him into the interior of this mysterious silent continent. After a dangerous passage he finally arrives at the company's most remote trading station. It is reigned over by Kurtz, a white man who seems to have become a kind of God figure to the local people. Marlow is fascinated by him, preferring his messianic ravings to the petty treachery and mercenarism of the other white traders. On the journey back, Kurtz dies, whispering “the horror, the horror”.The interpretation of these words has perplexed readers ever sin

Melvyn Bragg and guests discuss one of the most important philosophers of the 20th century, Karl Popper whose ideas about science and politics robustly challenged the accepted ideas of the day. He strongly resisted the prevailing empiricist consensus that scientists' theories could be proved true.Popper wrote: “The more we learn about the world and the deeper our learning, the more conscious, specific and articulate will be our knowledge of what we do not know, our knowledge of our ignorance”. He believed that even when a scientific principle had been successfully and repeatedly tested, it was not necessarily true. Instead it had simply not proved false, yet! This became known as the theory of falsification.He called for a clear demarcation between good science, in which theories are constantly challenged, and what he called “pseudo sciences” which couldn't be tested. His debunking of such ideologies led some to describe him as the “murderer of Freud and Marx”. He went on to apply his ideas to politics, advoc

Melvyn Bragg and guests discuss Genghis Khan. Born Temujin in the 12th Century, he was cast out by his tribe when just a child and left to struggle for survival on the harsh Steppes of what is now Mongolia. From these beginnings he went on to become Genghis Khan, leader of the greatest continuous land-based empire the world has ever seen. His conquered territories stretched from the Caspian Sea to the borders of Manchuria, from the Siberian forest to what is now Afghanistan.He was a charismatic commander and a shrewd military tactician. He was swift to promote those who served him well, ignoring race or creed, but vengeful to those who crossed him, killing every inhabitant of resistant towns, even the cats and dogs. Generally regarded as barbarians by their enemies, the Mongol armies were in fact disciplined and effective.So how did Genghis create such an impressive fighting force? How did he draw together such diverse peoples to create a wealthy and successful Empire? And what was his legacy for the territor

Melvyn Bragg and guests discuss the Greek mathematician Archimedes. Reputed to have shouted “Eureka!” as he leapt from his bath having discovered the principles of floating bodies. Whatever the truth of the myths surrounding the man, he was certainly one of the world’s great mathematicians. The practical application of his work in pulleys and levers created formidable weapons such as catapults and ship tilting systems, allowing his home city in Sicily to defend itself against the Romans. “Give me a place to stand and I will move the earth”, he declared.But despite these triumphs, his true love remained maths for maths sake. Plutarch writes: “He placed his whole affection and ambition in those purer speculations where there can be no reference to the vulgar needs of life.” His most important breakthroughs came in the field of geometry with his work on the areas and volumes of curved objects.So how did this Greek mathematician in the third century BC arrive at a calculation of Pi? Did he really create a Death

Melvyn Bragg and guests discuss the Jesuits, a Catholic religious order of priests who became known as “the school masters of Europe”. Founded in the 16th century by the soldier Ignatius Loyola, they became a major force throughout the world, from China to South America. “Give us a boy and we will return you a man, a citizen of his country and a child of God”, they declared. By the 17th century there were more than 500 schools established across Europe. Their ideas about a standardised curriculum and teaching became the basis for many education systems today.They were also among the greatest patrons of art in early modern Europe, using murals and theatre to get their message across. To their enemies they were a sinister collective whose influence reached into the courts of kings. Their wealth and their adaptability to local customs abroad provoked suspicion, prompting their eventual suppression in the late 18th century. They were re-established in 1814 and now have more than twenty thousand members.So why was

Melvyn Bragg and guests discuss the planet Mars. Named after the Roman god of war, Mars has been a source of continual fascination. It is one of our nearest neighbours in space, though it takes about a year to get there. It is very inhospitable with high winds racing across extremely cold deserts. But it is spectacular, with the highest volcano in the solar system and a giant chasm that dwarfs the Grand Canyon.For centuries there has been fierce debate about whether there is life on Mars and from the 19th century it was even thought there might be a system of canals on the planet. This insatiable curiosity has been fuelled by writers like HG Wells and CS Lewis and countless sci-fi films about little green men.So what do we know about Mars – its conditions, now and in the past? What is the evidence that there might be water and thus life on Mars? And when might we expect man to walk on its surface?With John Zarnecki, Professor of Space Science at the Open University and a team leader on the ExoMars mission; Co