“Besides the advantage of being armed, which the Americans possess over the people of almost every other nation, the existence of subordinate governments, to which the people are attached and by which the militia officers are appointed, forms a barrier against the enterprises of ambition, more insurmountable than any which a simple government of any form can admit of.”
— James Madison (Federalist No. 46, 1 February 1788)
Reference: Madison, Federalist No. 46.