All numbers are multiples of one, all sciences converge to a common point, all wisdom comes out of one center, and the number of wisdom is one.

Every physician must be rich in knowledge, and not only of that which is written in books; his patients should be his book, they will never mislead him.

Medicine is not merely a science but an art. The character of the physician may act more powerfully upon the patient than the drugs employed.

Nature is a light, and by looking at Nature in her own light we will understand her. Visible Nature may be seen in her visible light; invisible Nature may become visible if we acquire the power to perceive her invisible light.

The universities do not teach all things ... so a doctor must seek out old wives, gypsies, sorcerers, wandering tribes, old robbers, and such outlaws and take lessons from them. A doctor must be a traveller . . . Knowledge is experience.

It would be an error to try to build the Kingdom of Heaven upon envy. For nothing that is founded on envy can thrive; it must have another root.

Every body consists of three ingredients. The names of these are Sulphur, Mercury, and Salt.