Progressive improvement beats delayed perfection.

If everyone was satisfied with himself, there would be no heroes.

The first time a student realizes that a little learning is a dangerous thing is when he brings home a poor report card.

His ignorance covers the world like a blanket, and there's scarcely a hole in it anywhere.

I have carried a revolver; lots of us do, but they are the most innocent things in the world.

I begin to see that a man's got to be in his own heaven to be happy.

Humor must not professedly teach and it must not professedly preach, but it must do both if it would live forever.