Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.

I have friends in overalls whose friendship I would not swap for the favor of the kings of the world.

I consider Paine our greatest political thinker. As we have not advanced, and perhaps never shall advance, beyond the Declaration and Constitution, so Paine has had no successors who extended his principles.

Genius is 1 percent inspiration, 99 percent perspiration.

The great trouble is that the preachers get the children from six to seven years of age and then it is almost impossible to do anything with them.

What is a college? An institute of learning. What is a business? An institute of learning. Life, itself, is an institute of learning.

Incurably religious, that is the best way to describe the mental condition of so many people.