The authorities essential to the common defense are these: to raise armies; to build and equip fleets; to prescribe rules for the government of both;… - Alexander Hamilton

" "

The authorities essential to the common defense are these: to raise armies; to build and equip fleets; to prescribe rules for the government of both; to direct their operations; to provide for their support. These powers ought to exist without limitation, because it is impossible to foresee or define the extent and variety of national exigencies, or the correspondent extent and variety of the means which may be necessary to satisfy them. The circumstances that endanger the safety of nations are infinite, and for this reason no constitutional shackles can wisely be imposed on the power to which the care of it is committed. This power ought to be coextensive with all the possible combinations of such circumstances; and ought to be under the direction of the same councils which are appointed to preside over the common defense. This is one of those truths which, to a correct and unprejudiced mind, carries its own evidence along with it; and may be obscured, but cannot be made plainer by argument or reasoning. It rests upon axioms as simple as they are universal; the means ought to be proportioned to the end; the persons, from whose agency the attainment of any end is expected, ought to possess the means by which it is to be attained.