Nice list Bumper, I have a whole book "The Wit and Wisdom" of Mark Twain. I'll add a few stinging insults:
"He is dead and buried now, though; let him rest, let him rot. Let his vices be forgotten, but his virtues be remembered; it will not infringe much upon any man's time."
"I do not believe I could ever learn to like her except on a raft at sea with no other provisions in sight."
On Cecil Rhodes: "I admire him. I frankly confess it; and when his time comes I shall buy a piece of the rope for a keepsake."
On a book by Herny James: "Once you put it down, you simply can't pick it up."
On a former editor: "He has been dead a quarter of a century now. My bitterness against him has faded away and disappeared. I feel only compassion for him and if I could send him a fan I would
