Republic vs Democracy

"There is no good government but what is republican. That the only valuable part of the British constitution is so; for the true idea of a republic is 'an empire of laws, and not of men.' That, as a republic is the best of governments, so that particular arrangement of the powers of society, or in other words, that form of government which is best contrived to secure an impartial and exact execution of the law, is the best of republics." -John Adams, Thoughts on Government, 1776