The restriction of knowledge to an elite group destroys the spirit of the society and leads to its intellectual impoverishment.

I do not play games. There is not time for it. When I get through with work, I don't want anything that requires the working of the mind.

Adversity introduces a man to himself.

Scientific research is based on the idea that everything that takes place is determined by laws of Nature, and therefore this holds for the action of people. For this reason, a research scientist will hardly be inclined to believe that events could be influenced by a prayer, i.e. by a wish addressed to a Supernatural Being.

The religious geniuses of all ages have been distinguished by this kind of religious feeling, which knows no dogma and no God conceived in man's image; so that there can be no church whose central teachings are based on it. Hence it is precisely among the heretics of every age that we find men who were filled with this highest kind of religious feeling and were in many cases regarded by their contemporaries as atheists, sometimes also as saints. Looked at in this light, men like Democritus, Francis of Assisi, and Spinoza are closely akin to one another.

Balance in large measure is knowing the things that can be changed, putting them in proper perspective, and recognizing the things that will not change."

Nothing happens unless something moves.