righteousness is the law of
nature. Therefore the law of nature can be blotted out.
Obj. 2: Further, the law of grace is more efficacious than the law of
nature. But the law of grace is blotted out by sin. Much more
therefore can the law of nature be blotted out.
Obj. 3: Further, that which is established by law is made just. But
many things are enacted by men, which are contrary to the law of
nature. Therefore the law of nature can be abolished from the heart
of man.
_On the contrary,_ Augustine says (Confess. ii): "Thy law is written
in the hearts of men, which iniquity itself effaces not." But the law
which is written in men's hearts is the natural law. Therefore the
natural law cannot be blotted out.
_I answer that,_ As stated above (AA. 4, 5), there belong to the
natural law, first, certain most general precepts, that are known to
all; and secondly, certain secondary and more detailed precepts,
which are, as it were, conclusions following closely from first
principles. As to those general principles, the natural law, in the
abstract, can nowise be blotted out from men's hearts. But it is
blotted out in the case of a particular action, in so far as reason
is hindered from applying the general principle to a particular point
of practice, on account of concupiscence or some other passion, as
stated above (Q. 77, A. 2). But as to the other, i.e. the secondary
precepts, the natural law can be blotted out from the human heart,
either by evil persuasions, just as in speculative matters errors
occur in respect of necessary conclusions; or by vicious customs and
corrupt habits, as among some men, theft, and even unnatural vices,
as the Apostle states (Rom. i), were not esteemed sinful.
Reply Obj. 1: Sin blots out the law of nature in particular cases,
not universally, except perchance in regard to the secondary precepts
of the natural law, in the way stated above.
Reply Obj. 2: Although grace is more efficacious than nature, yet
nature is more essential to man, and therefore more enduring.
Reply Obj. 3: This argument is true of the secondary precepts of the
natural law, against which some legislators have framed certain
enactments which are unjust.
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QUESTION 95
OF HUMAN LAW
(In Four Articles)
We must now consider human law; and (1) this law considered in
itself; (2) its power; (3) its mutability. Under the first head
there are four points of inquiry:
(1) Its utility.
(
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