A History of Ideas

Paul Broks looks at the philosopher Ludwig Wittgenstein and the problem of "other minds". How do I know you are not a zombie who behaves like a human but actually has no consciousness? Even if you are conscious, how can I tell that what I experience as red, you do not experience as blue? I know what's going on in my own mind, but I can never have direct access to what's going on in

If a tree falls in a forest and nobody is there to hear it, does it make a sound?That's the kind of head-scratching question that's popularly believed to occupy the time and brains of philosophers. It relates to the ideas of immaterialism proposed by Bishop George Berkeley who asserted that the only things that exist are minds and ideas in those minds. He said that matter didn't re

Science is based on fact, right? Cold, unchanging, unarguable facts. Perhaps not, says physicist Tara Shears. Tara is more inclined to follow the principles of the Anglo-Austrian philosopher, Karl Popper. He believed that human knowledge progresses through 'falsification'. A theory or idea shouldn't be described as scientific unless it could, in principle, be proven false. Raised i

Barrister Harry Potter asks whether we can believe the evidence of our own eyes. It's a vital question for the justice system today and Harry traces it back to the work of 18th century Philosopher David Hume. Hume, a key figure in the Scottish Enlightenment, wrote about miracles, arguing they were most likely the product of wishful thinking and faulty perception. His arguments are

A history of ideas. Presented by Melvyn Bragg but told in many voices. Each week Melvyn is joined by four guests with different backgrounds to discuss a really big question. This week he's asking 'How can I know anything at all?'Helping him answer it are physicist Tara Shears, lawyer Harry Potter, philosopher Clare Carlisle and neuropsychologist Paul Broks. For the rest of the week

How should we love our children? Can we build on the feelings we experience when we see them for the first time, raise them by instinct and personal principles or should we consult the childcare gurus of the internet and the bookshelves?Lisa Appignanesi, the novelist, biographer and author of 'All About Love' suggests that we should turn to the first childcare expert of them all, J

What is love? Psychotherapist Mark Vernon looks at Freud's ideas on the Greek god Eros, which he saw as a kind of life force running through us, shaping our desires and passionsFreud is often thought of as reducing everything to sex, but in his view, for humans even sex isn't even really about sex. Although he started off thinking that sex was about biological release of pressure -

Giles Fraser discusses gene theory versus altruism with playwright Tom Stoppard whose play The Hard Problem explores the extent to which our genes dictate human acts of love and kindness, and Armand Leroi, the evolutionary biologist who says we are merely programmed to carry out altruistic acts.Producer: Maggie Ayre.

In 416BC the Greek playwright Aristophanes went to a drinking party. The guests included many famous Athenians, including Socrates, and all of them delivered a speech about love. Aristophanes' speech, says presenter Edith Hall, is 'quite simply the most charming account of why humans need a love partner, another half, in world literature.' In the beginning, he says, humans had two

A history of ideas. Presented by Melvyn Bragg but told in many voices.Each week Melvyn is joined by four guests with different backgrounds to discuss a really big question. This week he's asking 'What is Love?'.Helping him answer it are theologian Giles Fraser, writer Lisa Appignanesi, classicist Edith Hall and psychotherapist Mark Vernon.For the rest of the week Giles, Lisa, Edith