Old age is like an opium dream. Nothing seems real except the unreal.

A mind that is stretched by a new experience can never go back to its old dimensions.

To be civilized is to be potentially master of all possible ideas, and that means that one has got beyond being shocked, although one preserves one's own moral aesthetic preferences.

It is very grand to die in harness, but it is very pleasant to have the tight straps unbuckled and the heavy collar lifted from the neck and shoulders.

A good soldier, like a good horse, cannot be of a bad color.

Deep-seated preferences cannot be argued about - you cannot argue a man into liking a glass of beer.

To think great thoughts you must be heroes as well as idealists.