His grammar is foolishly correct, offensively precise. It flaunts itself in the reader's face all along, and struts and smirks and shows off, and is in a dozen ways irritating and disagreeable. To be serious, I write good grammar myself, but not in that spirit, I am thankful to say. That is to say, my grammar is of a high order, though not at the top. Nobody's is. Perfect grammar—persistent, continuous, sustained—is the fourth dimension, so to speak: many have sought it, but none has found it.

p. 120. - Autobiography of Mark Twain, Volume 1 (2010)