The powers of the federal government ... result from the compact to which the states are parties, [and are] limited by the plain sense and intention of the instrument constituting that compact.

The essence of Government is power; and power, lodged as it must be in human hands, will ever be liable to abuse.

Those who proposed the Constitution knew, and those who ratified the Constitution also knew that this is...a limited government tied down to specified powers....It was never supposed or suspected that the old Congress could give away the money of the states to encourage agriculture or for any other purpose they pleased.

The latent causes of faction are thus sown in the nature of man.

[Regarding legislative assemblies,] the number ought at most to be kept within a certain limit, in order to avoid the confusion and intemperance of a multitude. In all very numerous assemblies, of whatever characters composed, passion never fails to wrest the scepter from reason. Had every Athenian citizen been a Socrates, every Athenian assembly would still have been a mob.

A zeal for different opinions concerning religion, concerning government, and many other points, as well of speculation as of practice; an attachment to different leaders ambitiously contending for pre-eminence and power; or to persons of other descriptions whose fortunes have been interesting to the human passions, have, in turn, divided mankind into parties, inflamed them with mutual animosity, and rendered them much more disposed to vex and oppress each other than to co-operate for their common good.

The executive has no right, in any case, to decide the question, whether there is or is not cause for declaring war.