William Osler

Perhaps no sin so easily besets us as a sense of self-satisfied superiority to others.

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

Variability is the law of life, and as no two faces are the same, so no two bodies are alike, and no two individuals react alike and behave alike under the abnormal conditions which we know as disease.

In science the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.