“Think not of the amount to be accomplished, the difficulties to be overcome, or the end to be attained, but set earnestly, at the little task at your elbow, letting that be sufficient for the day.”

“Shut out all of your past except that which will help you weather your tomorrows.”

“Quit worrying about your health. It'll go away.”

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

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

“In seeking absolute truth we aim at the unattainable and must be content with broken portions. ”

“One special advantage of the skeptical attitude of mind is that a man is never vexed to find that after all he has been in the wrong.”