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Whether
Human Law Should Be Changed in Any Way
by Thomas Aquinas
[Note
that when the term "the Philosopher" is used by
Aquinas,
he is referring to
Aristotle.]
We proceed thus to the First Article: It would
seem that human law should not be changed in any
way at all.
Objection 1: For human law is derived
from the natural .... But the natural law endures
unchangeably. Therefore human law should also
remain without any change.
Objection 2: Further, as the Philosopher
says, a measure should be absolutely stable. But
human law is the measure of human acts ....
Therefore it should remain without change.
Objection 3: Further, it is of the essence of
law to be just and right .... But that which is
right once is right always. Therefore that which is
law once should be always law.
On the contrary, Augustine says: "A
temporal law, however just, may be justly changed
in course of time."
I answer that, ... human law is a dictate
of reason, by which human acts are directed. Thus
there may be two causes for the just change of
human law: one on the part of reason; the other on
the part of man whose acts are regulated by law.
The cause on the part of reason is that it seems
natural to human reason to advance gradually from
the imperfect to the perfect. Hence, in speculative
sciences, we see that the teaching of the early
philosophers was imperfect, and that it was
afterwards perfected by those who succeeded them.
So also in practical matters. For those who first
endeavored to discover something useful for the
human community, not being able by themselves to
take everything into consideration, set up certain
institutions which were deficient in many ways; and
these were changed by subsequent lawgivers who made
institutions that might prove less frequently
deficient in respect of the common weal.
On the part of man, whose acts are regulated by
law, the law can be rightly changed on account of
the changed condition of man, to whom different
things are expedient according to the difference of
his condition. An example is proposed by Augustine:
"If the people have a sense of moderation and
responsibility, and are most careful guardians of
the common weal, it is right to enact a law
allowing such a people to choose their own
magistrates for the government of the commonwealth.
But if, as time goes on, the same people become so
corrupt as to sell their votes, and entrust the
government to scoundrels and criminals, then the
right of appointing their public officials is
rightly forfeit to such a people, and the choice
devolves to a few good men."
Reply Obj. 1: The natural law is a
participation of the eternal law ..., and therefore
endures without change, owing to the
unchangeableness and perfection of the Divine
Reason, the Author of nature. But the reason of man
is changeable and imperfect, and therefore his law
is subject to change. Moreover the natural law
contains certain universal precepts, which are
everlasting, while human law contains certain
particular precepts, according to various
emergencies.
Reply Obj. 2: A measure should be as
enduring as possible. But nothing can be absolutely
unchangeable in things that are subject to change.
And therefore human law cannot be altogether
unchangeable.
Reply Obj. 3: In corporal things, right
is predicated absolutely, and therefore, as far as
itself is concerned, always remains right. But
right is predicated of law with reference to the
common weal, to which one and the same thing is not
always adapted .... Therefore rectitude of this
kind is subject to change.
Excerpted from Treatise on
Law, by Thomas Aquinas
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