Second. The necessity of a senate is not less indicated by the propensity of all single and numerous assemblies to yield to the impulse of sudden and… - Alexander Hamilton

It ought never to be forgotten, that a firm union of this country, under an efficient government, will probably be an increasing object of jealousy to more than one nation of Europe; and that enterprises to subvert it will sometimes originate in the intrigues of foreign powers, and will seldom fail to be patronized and abetted by some of them. Its preservation, therefore ought in no case that can be avoided, to be committed to the guardianship of any but those whose situation will uniformly beget an immediate interest in the faithful and vigilant performance of the trust.

It is not uncommon to meet with an opinion that though the promoting of manufactures may be the interest of a part of the Union, it is contrary to that of another part. The Northern & Southern regions are sometimes represented as having adverse interests in this respect. Those are called Manufacturing, these Agricultural states; and a species of opposition is imagined to subsist between the Manufacturing and Agricultural interests. This idea of an opposition between those two interests is the common error of the early periods of every country, but experience gradually dissipates it. Indeed they are perceived so often to succour and to befriend each other, that they come at length to be considered as one. (...) Perhaps the superior steadiness of the demand of a domestic market for the surplus produce of the soil, is alone a convincing argument of its truth.

The pains taken to preserve peace include a proportional responsibility that equal pains be taken to be prepared for war.