All progress means war with society.

If only for a half hour a day, a child should do something serviceable to the community

People who are hard, grasping and always ready to take advantage of their neighbors become very rich.

He who can, does. He who cannot, teaches.

It is not the number of years we have behind us, but the number we have before us, that makes us careful and responsible and determined to find out the truth about everything.

The price of ability does not depend on merit but on supply and demand.

We learn from history that we learn nothing from history.