I still will sit down at the piano and play when I am wrestling with something emotionally or just want to move into the musical world.

I'm still happy with the way Einstein's Dreams came out. That book came out of a single inspiration. I really felt like I was not creating the words, that I was hearing the words. That someone else was speaking the words to me and I was just writing them down. It was a very strange experience. That can happen with a short book. I don't think it could happen with a long book.

It's the Platonic philosophy in The Republic that philosophers should lead the country.

When I used to play golf. It's a terrible miserable game. It's incredibly frustrating. In 18 holes you make 150 horrible shots off in the woods, in the water...You make one good shot and it brings you back the next time. With writing a long book there has to be at least one bit that has some magic in it that you can go back to.

I spend a lot of time just listening to the ospreys. I watch them go through their life cycle. They spend the winter in South America. The mother and father osprey stay together. It's a monogamous relationship. And every summer they raise a new brood of children. They came back to the nest in the middle of April. They take separate vacations in the winter - the mother and father.

I value my correspondence with writers...I was in New York and had lunch with Oliver Sachs and compared notes with him - he is someone I really like. I love staying in written correspondence with some writers. That's enough for me.

I am spellbound by the plays of Shakespeare. And I am spellbound by the second law of thermodynamics. The great ideas in science, like the Cro-Magnon paintings and the plays of Shakespeare, are part of our cultural heritage.