Old people have fewer diseases than the young, but their diseases never leave them.

Nature itself is the best physician.

Men ought to know that from the brain, and from the brain only, arise our pleasures, joy, laughter and jests, as well as our sorrows, pains, griefs, and tears.

Some patients, though conscious that their condition is perilous, recover their health simply through their contentment with the goodness of the physician.

Through seven figures come sensations for a man; there is hearing for sounds, sight for the visible, nostril for smell, tongue for pleasant or unpleasant tastes, mouth for speech, body for touch, passages outwards and inwards for hot or cold breath. Through these come knowledge or lack of it.

The wise man should consider that health is the greatest of human blessings. Let food be your medicine.

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.