Men ought to know that from nothing else but the brain come joys, delights, laughter and sports, and sorrows, griefs, despondency, and lamentations. And by this, in an especial manner, we acquire wisdom and knowledge, and see and hear and know what are foul and what are fair, what are bad and what are good, what are sweet and what are unsavory…. And by the same organ we become mad and delirious, and fears and terrors assail us….All these things we endure from the brain when it is not healthy….In these ways I am of the opinion that the brain exercises the greatest power in the man.

Opposites are cures for opposites.

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

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.

Just as food causes chronic disease, it can be the most powerful cure

Sport is a preserver of health.

Time is that wherein there is opportunity, and opportunity is that wherein there is no great time.