Indulge yourself in pleasures only in so far as they are necessary for the preservation of health.

Things which are accidentally the causes either of hope or fear are called good or evil omens.

A good thing which prevents us from enjoying a greater good is in truth an evil.

The endeavor to understand is the first and only basis of virtue.

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.

...The body is affected by the image of the thing, in the same way as if the thing were actually present.

As men's habits of mind differ, so that some more readily embrace one form of faith, some another, for what moves one to pray may move another to scoff, I conclude ... that everyone should be free to choose for himself the foundations of his creed, and that faith should be judged only by its fruits.