Stephen Hawking held the post of Lucasian Professor of Mathematics and Theoretical Physics at Cambridge, the chair held by Isaac Newton in 1663, for thirty years. Professor Hawking is now Director of Research for the Centre for Theoretical Cosmology at the University of Cambridge. He has over a dozen honorary degrees, and was awarded the Companion of Honour in 1989. He is a fellow of the Royal Society and a Member of the US National Academy of Science. His books include the bestselling Black Holes and Baby Universes and Other Essays, The Universe in a Nutshell, and A Briefer History of Time. His most recent book, The Grand Design, was a Sunday Times bestseller. Stephen Hawking is regarded as one of the most brilliant theoretical physicists since Einstein. He lives in Cambridge.