Whoever wishes to investigate medicine should proceed thus: In the first place, consider the seasons of the year and what effect each of them produces.

The function of protecting and developing health must rank even above that of restoring it when it is impaired.

All disease starts in the gut.

The physician must be able to tell the antecedents, know the present, and foretell the future — must mediate these things, and have two special objects in view with regard to disease, namely, to do good or to do no harm.

The way to health is to have an aromatic bath and a scented massage every day.

The human body contains blood, phlegm, yellow bile and black bile. These are the things that make up its constitution and cause its pain and health. Health is primarily that state in which these constituent substances are in the correct proportion to each other, both in strength and quantity, and are well mixed.

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