Science alone of all the subjects contains within itself the lesson of the danger of belief in the infallibility of the greatest teachers of the preceding generation.

Science is of value because it can produce something.

Physicists like to think that all you have to do is say, these are the conditions, now what happens next?

Mathematics is not just a language. Mathematics is a language plus reasoning.

If the professors of English will complain to me that the students who come to the universities, after all those years of study, still cannot spell 'friend,' I say to them that something's the matter with the way you spell friend.

But logic is not all, one needs one's heart to follow an idea.

I would rather have questions that can't be answered than answers that can't be questioned.