To do nothing is sometimes a good remedy.

Everything in excess is opposed to nature.

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.

The body of man has in itself blood, phlegm, yellow bile and black bile; these make up the nature of this body, and through these he feels pain or enjoys health. Now he enjoys the most perfect health when these elements are duly proportioned to one another in respect of compounding, power and bulk, and when they are perfectly mingled.

Eunuchs do not take the gout, nor become bald.

Some patients, though conscious that their condition is perilous, recover their health simply through their contentment with the goodness of the physician.

Make a habit of two things: to help; or at least to do no harm.