Mere thinking cannot reveal to us the highest purpose.

How can it be that mathematics, being after all a product of human thought which is independent of experience, is so admirably appropriate to the objects of reality?

The place of the expert is on tap not on top.

Then there are the fanatical atheists whose intolerance is of the same kind as the intolerance of the religious fanatics and comes from the same source.

One who scorns the power of intuition will never rise above the ranks of journeyman calculator.

Most of the fundamental ideas of science are essentially simple, and may, as a rule, be expressed in a language comprehensible to everyone.

When I'm judging a theory, I ask myself whether, if I were God, I would have arranged the world in such a way.