The problem of creating something new, but which is consistent with everything which has been seen before, is one of extreme difficulty.

Scientists are explorers. Philosophers are tourists.

We scientists are clever — too clever — are you not satisfied? Is four square miles in one bomb not enough? Men are still thinking. Just tell us how big you want it!

Science is a way for us to not fool ourselves.

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

Start out understanding religion by saying everything is possibly wrong... As soon as you do that, you start sliding down an edge which is hard to recover from.

I have a limited intelligence and I've used it in a particular direction.