Mark Twain

Loyalty to petrified opinion never yet broke a chain or freed a human soul.

Fiction is obliged to stick to possibilities. Truth isn't.

There is nothing so annoying as to have two people talking when you're busy interrupting.

It is my belief that nearly any invented quotation, played with confidence, stands a good chance to deceive.

I'll risk forty dollars that he can outjump an frog in Calaveras county

In studying the traits and dispositions of the so-called lower animals, and contrasting them with man's, I find the result humiliating to me.

It is just like man's vanity and impertinence to call an animal dumb because it is dumb to his dull perceptions.

I was gratified to be able to answer promptly. I said, "I don't know."

I have never taken any exercise except sleeping and resting.

You can't depend on your eyes when your imagination is out of focus.