Languages are the keys of science.

A mediocre mind thinks it writes divinely; a good mind thinks it writes reasonably.

We rarely repent of speaking little, but often of speaking too much.

Too great carelessness, equally with excess in dress, multiplies the wrinkles of old age, and makes its decay still more conspicuous.

A modest man never talks of himself.

Two persons cannot long be friends if they cannot forgive each other's little failings.

The pleasure a man of honor enjoys in the consciousness of having performed his duty is a reward he pays himself for all his pains.