Power and violence are themes of the discussion of Hobbes who, Steven Pinker argues, was "perhaps the first cognitive psychologist." Although he was born in the late sixteenth century, we are fortunate to have some rich biographical description of Hobbes thanks to his contemporary and friend, the writer John Aubrey.

Now, the word Hobbesian is often used to describe a world in which life is "nasty, brutish and short." But Professor Pinker suggests Hobbes was actually "a nice man, despite the fact his name became a rather nasty adjective."

Producer: Chris Ledgard.