Everything is a drug; it depends on the dose.

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

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.

For one country is different from another; its earth is different, as are its stones, wines, bread, meat, and everything that grows and thrives in a specific region.

All drugs are poisons the benefit depends on the dosage.

The highest degree of a medicine is Love.

The human body is vapor materialized by sunshine mixed with the life of the stars.