Liberty, Part VI

John Locke, concerning even "absolute" power being limited to serving the purposes which make it necessary:

“And to let us see, that even absolute power, where it is necessary, is not arbitrary by being absolute, but is still limited by that reason, and confined to those ends, which required it in some cases to be absolute, we need look no farther than the common practice of martial discipline: for the preservation of the army, and in it of the whole common-wealth, requires an absolute obedience to the command of every superior officer, and it is justly death to disobey or dispute the most dangerous or unreasonable of them; but yet we see, that neither the serjeant, that could command a soldier to march up to the mouth of a cannon, or stand in a breach, where he is almost sure to perish, can command that soldier to give him one penny of his money; nor the general, that can condemn him to death for deserting his post, or for not obeying the most desperate orders, can yet, with all his absolute power of life and death, dispose of one farthing of that soldier's estate, or seize one jot of his goods; whom yet he can command any thing, and hang for the least disobedience; because such a blind obedience is necessary to that end, for which the commander has his power, viz. the preservation of the rest; but the disposing of his goods has nothing to do with it.”