Curiosity is as much the parent of attention, as attention is of memory.

Falsehood is difficult to be maintained. When the materials of a building are solid blocks of stone, very rude architecture will suffice; but a structure of rotten materials needs the most careful adjustment to make it stand at all.

Some persons follow the dictates of their conscience only in the same sense in which a coachman may be said to follow the horses he is driving.

When a man says he wants to work, what he means is that he wants wages.

Though not always called upon to condemn ourselves, it is always safe to suspect ourselves.

Unless people can be kept in the dark, it is best for those who love the truth to give them the full light.

He who is not aware of his ignorance will be only misled by his knowledge.