Women's regular bleeding engenders phantoms.

The highest degree of a medicine is Love.

A mortal lives not through that breath that flows in and that flows out. The source of his life is another and this causes the breath to flow.

What the eyes perceive in herbs or stones or trees is not yet a remedy; the eyes see only the dross.

Every physician must be rich in knowledge, and not only of that which is written in books; his patients should be his book, they will never mislead him.

Medicine is not only a science; it is also an art. It does not consist of compounding pills and plasters; it deals with the very processes of life, which must be understood before they may be guided.

That which lives on reason lives against the spirit.