That which lives on reason lives against the spirit.

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.

Let no one who can be his own belong to another.

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.

Consider that we shouldn't call our brother a fool, since we don't know ourselves what we are.

All arts lie in man, though not all are apparent. Awakening brings them out. To be taught is nothing; everything is in man waiting to be awakened.

Everything is a drug; it depends on the dose.