This power to act according to discretion, for the public good, without the prescription of the law, and sometimes even against it, is that which is called prerogative: for since in some governments the lawmaking power is not always in being, and is usually too numerous, and so too slow, for the dispatch requisite to execution; and because also it is impossible to foresee, and so by laws to provide for, all accidents and necessities that may concern the public, or to make such laws as will do no harm, if they are executed with an inflexible rigour, on all occasions, and upon all persons that may come in their way; therefore there is a latitude left to the executive power, to do many things of choice which the laws do not prescribe.

- Locke, John