We are much beholden to Machiavel and others, that write what men do, and not what they ought to do.
Source: The Advancement of Learning, bk. 2, ch. 21, sct. 9, 1605.
-- Francis Bacon, (Jan 22 1561-1626), English philosopher, statesman, essayist; He was an early advocate of inductive learning from intensive observation; wrote Novum Organum, 1620.