Medicine is a science of uncertainty and an art of probability.

The practice of medicine is an art, not a trade; a calling, not a business; a calling in which your heart will be exercised equally with your head. Often the best part of your work will have nothing to do with potions and powders, but with the exercise of an influence of the strong upon the weak, of the righteous upon the wicked, of the wise upon the foolish.

Take the sum of human achievement in action, in science, in art, in literature -- subtract the work of the men above forty, and while we should miss great treasurers, even priceless treasures, we would practically be where we are today. . . . The effective, moving, vitalizing work of the world is done between the ages of twenty-five and forty.

The good physician treats the disease; the great physician treats the patient who has the disease

The first duties of the physician is to educate the masses not to take medicine.

One of the first duties of the physician is to educate the masses not to take medicine.