We do not believe any group of men adequate enough or wise enough to operate without scrutiny or without criticism.

A pragmatist is concerned with results, not reality.

The most beautiful philosophical song existing in any known tongue.

There are children playing in the streets who could solve some of my top problems in physics, because they have modes of sensory perception that I lost long ago.

In some sort of crude sense, which no vulgarity, no humor, no overstatement can quite extinguish, the physicists have known sin; and this is a knowledge which they cannot lose.

Today, it is not only that our kings do not know mathematics, but our philosophers do not know mathematics and - to go a step further - our mathematicians do not know mathematics.

I can't think that it would be terrible of me to say - and it is occasionally true - that I need physics more than friends.