“At this point we find ourselves confronted by a very disquieting question: Do we really wish to act upon our knowledge?”

Consistency is contrary to nature, contrary to life. The only completely consistent people are dead.

The most shocking fact about war is that its victims and its instruments are individual human beings, and that these individual beings are condemned by the monstrous conventions of politics to murder or be murdered in quarrels not their own.

An intellectual is a person who’s found one thing that’s more interesting than sex.

Sons have always a rebellious wish to be disillusioned by that which charmed their fathers.

My father considered a walk among the mountains as the equivalent of churchgoing.

By thinking primarily of evil we tend, however excellent our intentions, to create occasions for evil to manifest itself.

Every man’s memory is his private literature.

The deepest sin against the human mind is to believe things without evidence.

Everyone who wants to do good to the human race always ends in universal bullying.

Human beings act in a great variety of irrational ways, but all of them seem to be capable, if given a fair chance, of making a reasonable choice in the light of available evidence. Democratic institutions can be made to work only if all concerned do their best to impart knowledge and to encourage rationality.

There is only one corner of the universe you can be certain of improving, and that’s your own self.

Good is a product of the ethical and spiritual artistry of individuals; it cannot be mass-produced.

Which is better – to be born stupid into an intelligent society or intelligent into an insane one?

In all activities of life, the secret of efficiency lies in an ability to combine two seemingly incompatible states: a state of maximum activity and a state of maximum relaxation.

All gods are homemade, and it is we who pull their strings, and so, give them the power to pull ours.

The secret of genius is to carry the spirit of the child into old age, which mean never losing your enthusiasm.