"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."
- Federalist Paper No. 59