History Repeats

But those who think that every Prince who has a name for prudence owes it to the wise counsellors he has around him, and not to any merit of his own, are certainly mistaken; since it is an unerring rule and of universal application that a Prince who is not wise himself cannot be well advised by others, unless by chance he surrender himself to be wholly governed by some one adviser who happens to be supremely prudent; in which case he may, indeed, be well advised; but not for long, since such an adviser will soon deprive him of his Government. If he listen to a multitude of advisers, the Prince who is not wise will never have consistent counsels, nor will he know of himself how to reconcile them. Each of his counsellors will study his own advantage, and the Prince will be unable to detect or correct them. Nor could it well be otherwise, for men will always grow rogues on your hands unless they find themselves under a necessity to be honest.

--Niccolo Machiavelli (1469–1527), The Prince, from Chapter XXIII: "That Flatterers Should Be Shunned"