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

Conservatism and old fogeyism are totally different things; the motto of one is "Prove all things and hold fast that which is good" and of the other "Prove nothing but hold fast that which is old."

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.

Without faith a man can do nothing; with it all things are possible.

There is no more difficult art to acquire than the art of observation, and for some men it is quite as difficult to record an observation in brief and plain language.

Soap and water and common sense are the best disinfectants.

He who studies medicine without books sails an uncharted sea, but he who studies medicine without patients does not go to sea at all.