James Fenimore Cooper wasn't Twain's only literary target. He also had some choice words for Jane Austen:
"I haven't any right to criticize books, and I don't do it except when I hate them. I often want to criticize Jane Austen, but her books madden me so that I can't conceal my frenzy from the reader; and therefore I have to stop every time I begin. Every time I read 'Pride and Prejudice' I want to dig her up and beat her over the skull with her own shin-bone."
Mark Twain Letter to Joseph Twichell, 9/13/1898
