No bubble is so iridescent or floats longer than that blown by the successful teacher.

The mediocre teacher tells. The good teacher explains. The superior teacher demonstrates. The great teacher inspires.

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.

It is much more important to know what sort of a patient has a disease than what sort of a disease a patient has.