"This country belongs to the people who inhabit it. Whenever they shall grow weary of the existing government, they can exercise their constitutional right of amending it, or exercise their revolutionary right to overthrow it." --Abraham Lincoln
To paraphrase Lincoln: "Government's power comes from the assent of those governed. Oh, you don't assent to my government? Here comes the Grand Army of the Republic to kill you."
This is only the fruit of 1865.