William Osler

"The philosophies of one age have become the absurdities of the next, and the foolishness of yesterday has become the wisdom of tomorrow."

"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."

"To have striven, to have made the effort, to have been true to certain ideals - this alone is worth the struggle."

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

"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."