Sir Arthur Eddington deduces religion from the fact that atoms do not obey the laws of mathematics. Sir James Jeans deduces it from the fact that they do.

[Kant] was like many people: in intellectual matters he was skeptical, but in moral matters he believed imjplicitly in the maximx that he had imbibed at his mother's knee.

Men fear thought as they fear nothing else on earth - more than ruin, more even than death.

Boredom is... a vital problem for the moralist, since half the sins of mankind are caused by the fear of it.

The commonest objection to birth control is that it is against nature.

Every man, wherever he goes, is encompassed by a cloud of comforting convictions, which move with him like flies on a summer day.

Very many people spend money in ways quite different from those that their natural tastes would enjoin, merely because the respect of their neighbors depends upon their possession of a good car and their ability to give good dinners. As a matter of fact, any man who can obviously afford a car but genuinely prefers travels or a good library will in the end be much more respected than if he behaved exactly like everyone else.