Nature has no goal in view, and final causes are only human imaginings.

The virtue of a free man appears equally great in refusing to face difficulties as in overcoming them.

Men who are ruled by reason desire nothing for themselves which they would not wish for all mankind.

If a man had begun to hate an object of his love, so that love is thoroughly destroyed, he will, causes being equal, regard it with more hatred than if he had never loved it, and his hatred will be in proportion to the strength of his former love.

Everything in nature is a cause from which there flows some effect.

The proper study of a wise man is not how to die but how to live.

Men govern nothing with more difficulty than their tongues, and can moderate their desires more than their words.