All excesses are inimical to Nature. It is safer to proceed a little at a time, especially when changing from one regimen to another.

The physician must have at his command a certain ready wit, as dourness is repulsive both to the healthy and the sick.

Science begets knowledge; opinion, ignorance.

If we could give every individual the right amount of nourishment and exercise, not too little and not too much, we would have found the safest way to health.

There are, in effect, two things, to know and to believe one knows; to know is science; to believe one knows is ignorance.

The forms of diseases are many and the healing of them is manifold.

Even when all is known, the care of a man is not yet complete, because eating alone will not keep a man well; he must also take exercise. For food and exercise, while possessing opposite qualities, yet work together to produce health.