There are three kinds of lies: Lies, Damn Lies, and Statistics.
Source, in full
Attributed to Disraeli by Mark Twain in "Chapters from My Autobiography — XX", North American Review No. DCXVIII (JULY 5, 1907) . His attribution is considered unreliable, and the actual origin is uncertain, with one of the earliest known publications of such a phrase being that of Leonard H. Courtney: see Lies, damned lies, and statistics.