In Our Time Folgen

Melvyn Bragg and guests discuss Stoicism, the third great philosophy of the Ancient World. It was founded by Zeno in the fourth century BC and flourished in Greece and then in Rome. Its ideals of inner solitude, forbearance in adversity and the acceptance of fate won many brilliant adherents and made it the dominant philosophy across the whole of the Ancient World. The ex-slave Epictetus said "Man is troubled not by events, but by the meaning he gives them". Seneca, the politician, declared that "Life without the courage for death is slavery". The stoic thoughts of Marcus Aurelius, the philosopher emperor, provided a rallying point for empire builders into the modern age.Stoicism influenced the Christian church, had a big effect on Shakespeare and Renaissance drama and may even have given the British their 'stiff upper lip', but it's a philosophy that was almost forgotten in the 20th century. Does it still have a legacy for us today?With Angie Hobbs, Lecturer in Philosophy, University of Warwick; Jonathan Rée, philosopher and historian; David Sedley, Laurence Professor of Ancient Philosophy, University of Cambridge.

Melvyn Bragg and guests discuss the history of Alchemy, the ancient science of transformations. The most famous alchemical text is the Emerald Tablet, written around 500BC and attributed to the mythical Egyptian figure of Hermes Trismegistus. Among its twelve lines are the essential words - “as above, so below". They capture the essence of alchemy, that the heavens mirror the earth and that all things correspond to one another. Alchemy was taken up by some of the most extraordinary people in our intellectual development, including Roger Bacon, Paracelsus, the father of chemistry, Robert Boyle, and, most famously, Isaac Newton, who wrote more about alchemy than he did about physics. It is now contended that it was Newton’s studies into alchemy which gave him the fundamental insight into the famous three laws of motion and gravity.With Peter Forshaw, Lecturer in Renaissance Philosophies at Birkbeck, University of London, Lauren Kassell, Lecturer in the History and Philosophy of Science at the University of Cambridge, Stephen Pumfrey, Senior Lecturer in the History of Science at the University of Lancaster.

Melvyn Bragg and guests discuss the Cambrian period when there was an explosion of life on Earth. In the Selkirk Mountains of British Columbia in Canada, there is an outcrop of limestone shot through with a seam of fine dark shale. A sudden mudslide into shallow water some 550 million years ago means that a startling array of wonderful organisms has been preserved within it. Wide eyed creatures with tentacles below and spines on their backs, things like flattened rolls of carpet with a set of teeth at one end, squids with big lobster-like arms. There are thousands of them and they seem to testify to a time when evolution took a leap and life on this planet suddenly went from being small, simple and fairly rare to being large, complex, numerous and dizzyingly diverse. It happened in the Cambrian Period and it's known as the Cambrian Explosion.But if this is the great crucible of life on Earth, what could have caused it? How do the strange creatures relate to life as we see it now? And what does the Cambrian Explosion tell us about the nature of evolution?With Simon Conway Morris, Professor of Evolutionary Palaeobiology, Cambridge University; Richard Corfield, Visiting Senior Lecturer at the Centre for Earth, Planetary, Space and Astronomical Research, Open University; Jane Francis, Professor of Palaeoclimatology, University of Leeds.