Let us remember, when we are inclined to be disheartened, that the private soldier is a poor judge of the fortunes of a great battle.

Man, as we know him, is a poor creature; he is halfway between an ape and a god and he is travelling in the right direction.

Originality is undetected plagiarism.

The wise man is he who knows the relative value of things.

The modern world belongs to the half-educated, a rather difficult class, because they do not realize how little they know.

The fruit of the tree of knowledge always drives man from some paradise or other; and even the paradise of fools is not an unpleasant abode while it is habitable.

I think middle-age is the best time, if we can escape the fatty degeneration of the conscience which often sets in at about fifty.