STATISTICS

Figures often beguile me, particularly when I have the arranging of them myself; in which case the remark attributed to Disraeli would often apply with justice and force: "There are three kinds of lies: lies, damned lies and statistics."
- Autobiography of Mark Twain

for more info on the background of this quote, see Stephen Goranson's post to the Mark Twain Forum July 31, 2002