"He has all the virtues I dislike and none of the vices I admire." - Winston Churchill
"A modest little person, with much to be modest about." - Winston Churchill
"I have never killed a man, but I have read many obituaries with great pleasure." - Clarence Darrow
"He has never been known to use a word that might send a reader to the dictionary." - William Faulkner (about Ernest Hemingway)
"Poor Faulkner. Does he really think big emotions come from big words?" - Ernest Hemingway (about William Faulkner)
"Thank you for sending me a copy of your book; I'll waste no time reading it." - Moses Hadas
"He can compress the most words into the smallest idea of any man I know." - Abraham Lincoln
"I've had a perfectly wonderful evening. But this wasn't it." - Groucho Marx
"I didn't attend the funeral, but I sent a nice letter saying I approved of it." - Mark Twain
"He has no enemies, but is intensely disliked by his friends." - Oscar Wilde
"I am enclosing two tickets to the first night of my new play, bring a friend... if you have one." -- George Bernard Shaw to Winston Churchill
"Cannot possibly attend first night, will attend second... if there is one." - Winston Churchill, in reply
I can't think of anything clever.