Science is the father of knowledge, but opinion breeds ignorance.

Sport is a preserver of health.

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.

War is the only proper school of the surgeon.

Men think epilepsy divine, merely because they do not understand it. We will one day understand what causes it, and then cease to call it divine. And so it is with everything in the universe.

Everyone has a doctor in him or her; we just have to help it in its work. The natural healing force within each one of us is the greatest force in getting well. Our food should be our medicine. Our medicine should be our food. But to eat when you are sick, is to feed your sickness.

The chief virtue that language can have is clearness, and nothing detracts from it so much as the use of unfamiliar words.