Through and through the world is infested with quantity. To talk sense is to talk quantities, It is no use saying the nation is large- how large? It is no uses aying that radium is scarce- how scarce? You cannot evade quantity. You may fly to poetry and music and quantity and number will face you in your rhythms and your octaves.

True courage is not the brutal force of vulgar heroes, but the firm resolve of virtue and reason.

Religion is the last refuge of human savagery.

The art of progress is to preserve order amid change and to preserve change amid order.

If a dog jumps in your lap, it is because he is fond of you. If a cat does the same thing, it is because your lap is warmer.

The deepest definition of Youth is Life as yet untouched by tragedy.

The safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato.

Art is the imposing of a pattern on experience, and our aesthetic enjoyment is recognition of the pattern.

Civilization advances by extending the number of important operations which we can perform without thinking about them.

Intelligence is quickness to apprehend as distinct from ability, which is capacity to act wisely on the thing apprehended.