The brain of man, like that of all animals is double, being parted down its centre by a thin membrane. For this reason pain is not always felt in the same part of the head, but sometimes on one side, sometimes on the other, and occasionally all over.

An insolent reply from a polite person is a bad sign.

Men ought to know that from the brain, and from the brain only, arise our pleasures, joy, laughter and jests, as well as our sorrows, pains, griefs, and tears.

Silence is not only never thirsty, but also never brings pain or sorrow.

The physician treats, but nature heals.

Life is short and the art long.

It is more important to know the person who has the condition than it is to know the condition the person has.