The clean tongue, the clear head, and the bright eye are birthrights of each day.

The value of experience is not in seeing much, but in seeing wisely.

Look wise, say nothing, and grunt. Speech was given to conceal thought.

Even in populous districts, the practice of medicine is a lonely road which winds up-hill all the way and a man may easily go astray and never reach the Delectable Mountains unless he early finds those shepherd guides of whom Bunyan tells, Knowledge, Experience, Watchful, and Sincere.

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

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

The successful teacher is no longer on a height, pumping knowledge at high pressure into passive receptacles.