The dose makes the poison.

It is said that a wise man rules over the stars, but this does not mean that he rules over the influences which come from the stars in the sky. It means that he rules over the powers which exist in his own constitution.

The physician must give heed to the region in which the patient lives, that is to say, to its type and peculiarities.

It should be forbidden and severely punished to remove cancer by cutting, burning, cautery, and other fiendish tortures. It is from nature that the disease comes, and from nature comes the cure, not from physicians.

Medicine is not only a science; it is also an art. It does not consist of compounding pills and plasters; it deals with the very processes of life, which must be understood before they may be guided.

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

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.