It takes me a long time to lose my temper, but once lost I could not find it with a dog.

As by the fires of experience, so by commission of crime you learn real morals. Commit all crimes, familiarize yourself with all sins, take them in rotation (there are only two or three thousand of them), stick to it, commit two or three every day, and by and by you will be proof against them. When you are through you will be proof against all sins and morally perfect. You will be vaccinated against every possible commission of them. This is the only way.

Preachers are always pleasant company when they are off duty.

I hate editors, for they make me abandon a lot of perfectly good English words.

An average English word is four letters and a half. By hard, honest labor I've dug all the large words out of my vocabulary and shaved it down till the average is three and a half... I never write metropolis for seven cents, because I can get the same money for city. I never write policeman, because I can get the same price for cop.... I never write valetudinarian at all, for not even hunger and wretchedness can humble me to the point where I will do a word like that for seven cents; I wouldn't do it for fifteen.

Never argue with stupid people, they will drag you down to their level and then beat you with experience.

It is better to take what does not belong to you than to let it lie around neglected.