The book of Nature is that which the physician must read; and to do so he must walk over the leaves.

Alterius non sit qui suus esse potest. (Let no man belong to another that can belong to himself.)

The art of medicine has its roots in the heart.

What the eyes perceive in herbs or stones or trees is not yet a remedy; the eyes see only the dross.

Dreams are not without meaning wherever they may come from — from fantasy, from the elements, or from another inspiration.

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.

And it is true, best is nothing concealed which shall not be discovered; for which cause a marvellous being shall come after me, who as yet lives not, and who shall reveal many things.