First of all a natural talent is required; for when Nature opposes, everything else is in vain; but when Nature leads the way to what is most excellent, instruction in the art takes place.

It is better not to apply any treatment in cases of occult cancer; for if treated (by surgery), the patients die quickly; but if not treated, they hold out for a long time.

We must turn to nature itself, to the observations of the body in health and in disease to learn the truth.

What medicines do not heal, the lance will; what the lance does not heal, fire will.

The wise man should consider that health is the greatest of human blessings. Let food be your medicine.

Walking is a man's best medicine.

That which is used - develops. That which is not used wastes away.