Every other knowledge is harmful to him who does not have knowledge of goodness.

The laws of conscience, though we ascribe them to nature, actually come from custom.

Poverty of goods is easily cured; poverty of soul, impossible.

Valor is stability, not of legs and arms, but of courage and the soul.

There is nothing useless in nature; not even uselessness itself

Habit is second nature.

The advantage of living is not measured by length, but by use; some men have lived long, and lived little; attend to it while you are in it. It lies in your will, not in the number of years, for you to have lived enough.