Let food be thy medicine and medicine be thy food
We must turn to nature itself, to the observations of the body in health and in disease to learn the truth.
Each of the substances of a man's diet acts upon his body and changes it in some way and upon these changes his whole life depends.
Idleness and lack of occupation tend - nay are dragged - towards evil.
If you are not your own doctor, you are a fool.
There are in fact two things, science and opinion. The former begets knowledge, the latter ignorance.