Neither a man nor a crowd nor a nation can be trusted to act humanely or to think sanely under the influence of a great fear.
Work is of two kinds: first, altering the position of matter at or near the earth's surface relative to other matter; second, telling other people to do so.
No one gossips about other people's secret virtues.
None but a coward dares to boast that he has never known fear.
Obscenity is whatever happens to shock some elderly and ignorant magistrate.
To be without some of the things you want is an indispensable part of happiness.
Of all forms of caution, caution in love is perhaps the most fatal to true happiness.
Liberty is the right to do what I like; license, the right to do what you like.
Mathematics takes us into the region of absolute necessity, to which not only the actual word, but every possible word, must conform.
The degree of one's emotions varies inversely with one's knowledge of the facts.
The place of the father in the modern suburban family is a very small one, particularly if he plays golf.
The only thing that will redeem mankind is cooperation.
The observer, when he seems to himself to be observing a stone, is really, if physics is to be believed, observing the effects of the stone upon himself.
The megalomaniac differs from the narcissist by the fact that he wishes to be powerful rather than charming, and seeks to be feared rather than loved. To this type belong many lunatics and most of the great men of history.
The infliction of cruelty with a good conscience is a delight to moralists. That is why they invented Hell.