Education is the sum of what students teach each other between lectures and seminars.

I suppose the thing I most would have liked to have known or been reassured about is that in the world, what counts more than talent, what counts more than energy or concentration or commitment, or anything else - is kindness. And the more in the world that you encounter kindness and cheerfulness - which is its kind of amiable uncle or aunt - the better the world always is. And all the big words: virtue, justice, truth - are dwarfed by the greatness of kindness.

There's no doubt that I do have extremes of mood that are greater than just about anybody else I know.

Self pity is the worst possible emotion anyone can have. And the most destructive. It is, to slightly paraphrase what Wilde said about hatred, and I think actually hatred's a subset of self pity and not the other way around - 'It destroys everything around it, except itself.'

You are who you are when nobody's watching.

People who can change and change again are so much more reliable and happier than those who can’t

People sometimes accuse me of knowing a lot. "Stephen," they say, accusingly, "you know a lot." This is a bit like telling a person who has a few grains of sand clinging to him that he owns much sand. When you consider the vast amount of sand there is in the world such a person is, to all intents and purposes, sandless. We are all sandless. We are all ignorant. There are beaches and deserts and dunes of knowledge whose existance we have never even guessed at, let alone visited.