The great security against a gradual concentration of the several powers in the same department, consists in giving to those who administer each department the necessary constitutional means, and personal motives, to resist encroachments of the others. The provision for defence must in this, as in all other cases, be made commensurate to the danger of attack.

Federalist No. 51 (1788-02-06) - Federalist Papers (1787–1788)

The Federalist (Dawson)/50