In the interchange of thought use no coin but gold and silver.

A maxim is the exact and noble expression of an important and indisputable truth. Good maxims are the germs of all excellence; when firmly fixed on the memory, they nourish the will.

Old age deprives the intelligent man only of qualities useless to wisdom.

Tormented by the cursed ambition always to put a whole book in a page, a whole page in a sentence, and this sentence in a word. I am speaking of myself.

Children must be rendered reasonable, but not reasoners. The first thing to teach them is that it is reasonable for them to obey, and unreasonable for them to dispute.

To teach is to learn twice.

The voice is a human sound which nothing inanimate can perfectly imitate. It has an authority and an insinuating property which writing lacks. It is not merely so much air, but air modulated and impregnated with life.