He loved invective.

“It is the will of God that we must have critics, and missionaries, and Congressmen, and humorists, and we must bear the burden.” Mark Twain, quoted in his new, unexpurgated autobiography. Review at NY Times. Title quote from Justin Kaplan, author of an earlier bio, and also of the acclaimed bio of Walt Whitman. This is volume one, and I'm sure it's a good read. Three volumes are planned, based on material Twain dictated to a stenographer over four years before he died in 1910.

“From the first, second, third and fourth editions all sound and sane expressions of opinion must be left out,” Twain instructed them in 1906. “There may be a market for that kind of wares a century from now. There is no hurry. Wait and see.”