I am sure that one secret of a successful teacher is that he has formulated quite clearly in his mind what the pupil has got to know in precise fashion. He will then cease from half-hearted attempts to worry his pupils with memorizing a lot of irrelevant stuff of inferior importance.

You think the world is what it looks like in fine weather at noon day; I think it is what it seems like in the early morning when one first wakes from deep sleep.

In a sense, knowledge shrinks as wisdom grows: for details are swallowed up in principles.

Thus the negative perception is the triumph of consciousness.

Mathematics as a science, commenced when first someone, probably a Greek, proved propositions about "any" things or about "some" things, without specifications of definite particular things.

I have always noticed that deeply and truly religious persons are fond of a joke, and I am suspicious of those who aren't.

[In many circumstances,] the most important thing about a proposition is not that it be true, but that it be interesting.