Nothing is more sad than the death of an illusion.

Newton's apple and Cezanne's apple are discoveries more closely related than they seem.

When a person identifies himself with a group his critical faculties are diminished and his passions enhanced by a kind of emotive resonance. The individual is not a killer, the group is, and by identifying with it, the individual becomes one. This is the infernal dialect reflected in man's history.

You can't help people being right for the wrong reasons...This fear of finding oneself in bad company is not an expression of political purity; it is an expression of a lack of self-confidence.

Scientists are peeping toms at the keyhole of eternity.

Wars are not fought for territory, but for words. Man's deadliest weapon is language. He is as susceptible to being hypnotized by slogans as he is to infectious diseases. And where there is an epidemic, the group-mind takes over.

No writer or teacher or artist can escape the responsibility of influencing others whether he intends to or not, whether he is conscious of it or not.