In 1789, for the first time, at least in modern history and in the western world, there was set up an executive who was at one and the same time the chief of state, the leader of the legislature, the leader of a political party, the commander in chief of the military forces of the nation, and toe executive manager of the government.

Louis Brownlow. "The Executive Office of the Presidency." Public Administration Review, Winter 1941, vol. 1. p. 102.