What a good thing Adam had. When he said a good thing he knew nobody had said it before.

The secret source of humor is not joy but sorrow.

It is not worth while to try to keep history from repeating itself, for man's character will always make the preventing of the repetitions impossible.

Man is the only slave. And he is the only animal who enslaves. He has always been a slave in one form or another, and has always held other slaves in bondage under him in one way or another. In our day, he is always some man's slave for wages, and does that man's work; and this slave has other slaves under him for minor wages, and they do his work. The higher animals are the only ones who exclusively do their own work and provide their own living.

Is a person's public and private opinion the same? It is thought there have been instances.

It liberates the vandal to travel-you never saw a bigoted, opinionated, stubborn, narrow-minded, self-conceited, almighty mean man in your life but he had stuck in one place since he was born and thought God made the world and dyspepsia and bile for his especial comfort and satisfaction.

Some things you can't find out; but you will never know you can't by guessing and supposing: no, you have to be patient and go on experimenting until you find out that you can't find out.