All parts of the body which have a function, if used in moderation and exercised in labors in which each is accustomed, become thereby healthy, well developed and age more slowly, but if unused they become liable to disease, defective in growth and age quickly.
It’s more important to know what sort of person has a disease than to know what sort of disease a person has.
Make a habit of two things: to help; or at least to do no harm.
If someone wishes for good health, one must first ask oneself if he is ready to do away with the reasons for his illness. Only then is it possible to help him.
The greatest medicine of all is teaching people how not to need it.
Illnesses do not come upon us out of the blue. They are developed from small daily sins against Nature. When enough sins have accumulated, illnesses will suddenly appear.
There are in fact two things, science and opinion. The former begets knowledge, the latter ignorance.