" If men were angels, no government would be necessary. If angels were to govern men,
neither external nor internal controls on government would be necessary. In framing a
government which is to be administered by men over men, the great difficulty lies in
this: you must first enable the government to control the governed; and in the next
place oblige it to control itself. A dependence on the people is, no doubt, the
primary control on the government; but experience has taught mankind the necessity of
auxiliary precautions. "

― James Madison