Page:Joseph Story, Commentaries on the Constitution of the United States (1st ed, 1833, vol I).djvu/453

 CH. V.] deemed a part of die power itself. This results from the very nature- and design of a constitution. In giving the power, it does not intend to limit it to any one mode of exercising it, exclusive of all others. It must be obvious, (as has been already suggested,) that the means of carrying into effect the objects of a power may, nay, must be varied, in order to adapt themselves to the exigencies of the nation at different times. A mode efficacious and useful in one age, or under one posture of circumstances, may be wholly vain, or even mischievous at another time. Government presupposes the existence of a perpetual mutability in its own operations on those, who are its subjects; and a perpetual flexibility in adapting itself to their wants, their interests, their habits, their occupations, and their infirmities.