3. No power in heaven above nor on earth beneath can dispense from any portion of the Natural Law. For the matter of the negative precepts of that law is, as we have seen, something bad in itself and repugnant to human nature, and accordingly forbidden by God: while the matter of the positive precepts is something good and necessary to man, commanded by God. If God were to take off His command, or prohibition, the intrinsic exigency, or intolerableness, of the thing to man would still remain, being as inseparable from humanity as certain mathematical properties from a triangle. Pride is not made for man, nor fornication, nor lying, nor polygamy [Footnote 14]: human nature would cry out against them, even were the Almighty in a particular instance to withdraw His prohibition. What would be the use, then, of any such withdrawal? It would not make the evil thing good. An evil thing it would still remain, unnatural, irrational, and as such, displeasing to God, the Supreme Reason. The man would not be free to do the thing, even though God did not forbid it. It appears, therefore, that the Divine prohibition, and similarly the Divine command, which we have proved (c. vi., s. ii., nn. 10, 11, p. 121) to be necessarily imposed in matters of natural evil and of naturally imperative good, is imposed as a hard and fast line, so long as the intrinsic good or evil remains the same. [Footnote 14: There is a theological difficulty about the polygamy of the patriarchs, which will be touched on in _Natural Law_, c. vi., s. ii., n. 4. p. 272.]