In order to render this change eligible as well to the society as to the slaves, it would be necessary that a complete incorporation of the latter in… - James Madison

In time of actual war, great discretionary powers are constantly given to the Executive Magistrate. Constant apprehension of War, has the same tendency to render the head too large for the body. A standing military force, with an overgrown Executive will not long be safe companions to liberty. The means of defence against foreign danger have been always the instruments of tyranny at home. Among the Romans it was a standing maxim to excite a war, whenever a revolt was apprehended. Throughout all Europe, the armies kept up under the pretext of defending, have enslaved the people.

If men were angels, no government would be necessary.

In framing a system which we wish to last for ages, we shd. not lose sight of the changes which ages will produce. [James Madison in the U.S. Constitutional Convention, June 26, 1787. The Records of the Federal Convention of 1787, ed. Max Farrand (New Haven: Yale University Press, 1966), 1:422.]