When you find that a book is poor ... waste no more time upon it.

The People, though we think of a great entity when we use the word, means nothing more than so many millions of individual men.

Three-fourths of the mistakes a man makes are made because he does not really know the things he thinks he knows.

Medicine, the only profession that labors incessantly to destroy the reason for its own existence.

Our country is not the only thing to which we owe our allegiance. It is also owed to justice and to humanity.

The national park is the best idea America ever had.

The tendency everywhere in America to concentrate power and responsibility in one man is unmistakable.