Don't wait for miracles, your whole life is a miracle.

The world is so full of possibilities that dogmatism is simply indecent.

If I had my life to live over again, I would elect to be a trader of goods rather than a student of science. I think barter is a noble thing.

Human beings, in their thinking, feeling and acting are not free agents but are as causally bound as the stars in their motion.

The rest of my life (as a 39 year old) I want to reflect on what life is.

If I can't picture it, I can't understand it.

For every one billion particles of antimatter there were one billion and one particles of matter. And when the mutual annihilation was complete, one billionth remained - and that's our present universe.