Joan Bakewell explores the beliefs of artists, thinkers, religious leaders and other public figures in a returning series of programmes on Radio 3. Tonight Joan Bakewell's guest is the physician, poet and philosopher, Raymond Tallis. He is Professor Emeritus of Geriatric medicine at Manchester University but has made his name as much outside the field of medicine as within it. A humanist, he writes about the transcendence of human beings and is a vigorous critic of the kind of scientific thinking which reduces them to animals. According to Tallis, only humans can point, and in that action they transcend their biology.