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.

If any philosopher had been asked for a definition of infinity, he might have produced some unintelligible rigmarole, but he would certainly not have been able to give a definition that had any meaning at all.

When a man tells you that he knows the exact truth about anything you are safe in inferring that he is an inexact man.

The place of the father in the modern suburban family is a very small one, particularly if he plays golf.

Folly is perennial and yet the human race has survived.

Science is at no moment quite right, but it is seldom quite wrong, and has, as a rule, a better chance of being right than the theories of the unscientific. It is, therefore, rational to accept it hypothetically.

Mankind has become so much one family that we cannot insure our own prosperity except by insuring that of everyone else.