I was seldom able to see an opportunity until it had ceased to be one.

Man is the only creature who has a nasty mind.

The man who doesn't read good books has no advantage over the man who can't read them.

I don't know anything about this man. Anyhow, I only know two things about him. One is, he has never been in jail, and the other is, I don't know why.

Education: that which reveals to the wise, and conceals from the stupid, the vast limits of their knowledge.

Whenever the literary German dives into a sentence that is the last you are going to see of him until he emerges on the other side of his Atlantic with his verb in his mouth.

America cannot have an empire abroad and a Republic at home.

I am sure I know of no agony comparable to the listening to an unfamiliar opera.

Truth is mighty and will prevail. There is nothing wrong with this, except that it ain't so.

Man is the religious animal. He is the only religious animal. He is the only animal that has the True Religion –- several of them. He is the only animal that loves his neighbor as himself and cuts his throat, if his theology isn't straight.