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

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

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.

To know what has to be done, then do it, comprises the whole philosophy of practical life.

The future is today.

Observe, record, tabulate, communicate. Use your five senses. Learn to see, learn to hear, learn to feel, learn to smell, and know that by practice alone you can become expert.