The Natural Law and the EN

A point that came out in the discussion below is one that will be of interest to any of you following the discussion of the Nicomachean Ethics. How does Aristotle's ethics fit into what you believe today? 

Well, for those of you who are Catholics, Aristotle's ethics were adopted into Catholic ethics as the Natural Law as it applies to human beings. Because Aristotle derived the virtues and vices without benefit of scripture or Judeo-Christian tradition, but from reason applied to nature, Aquinas adopts them and the later traditions about them into the model on the terms of natural theology: things we can know about God's intent by knowing about God's works.
Isidore says (Etym. v, 4): "The natural law is common to all nations."

I answer that, As stated above (Article 2,Article 3), to the natural law belongs those things to which a man is inclined naturally: and among these it is proper to man to be inclined to act according to reason. Now the process of reason is from the common to the proper, as stated in Phys. i. The speculative reason, however, is differently situated in this matter, from the practical reason. For, since the speculative reason is busied chiefly with the necessary things, which cannot be otherwise than they are, its proper conclusions, like the universal principles, contain the truth without fail. The practical reason, on the other hand, is busied with contingent matters, about which human actions are concerned: and consequently, although there is necessity in the general principles, the more we descend to matters of detail, the more frequently we encounter defects. Accordingly then in speculative matters truth is the same in all men, both as to principles and as to conclusions: although the truth is not known to all as regards the conclusions, but only as regards the principles which are called common notions. But in matters of action, truth or practical rectitude is not the same for all, as to matters of detail, but only as to the general principles: and where there is the same rectitude in matters of detail, it is not equally known to all.

It is therefore evident that, as regards the general principles whether of speculative or of practical reason, truth or rectitude is the same for all, and is equally known by all. As to the proper conclusions of the speculative reason, the truth is the same for all, but is not equally known to all: thus it is true for all that the three angles of a triangle are together equal to two right angles, although it is not known to all. But as to the proper conclusions of the practical reason, neither is the truth or rectitude the same for all, nor, where it is the same, is it equally known by all. Thus it is right and true for all to act according to reason: and from this principle it follows as a proper conclusion, that goods entrusted to another should be restored to their owner. Now this is true for the majority of cases: but it may happen in a particular case that it would be injurious, and therefore unreasonable, to restore goods held in trust; for instance, if they are claimed for the purpose of fighting against one's country. And this principle will be found to fail the more, according as we descend further into detail, e.g. if one were to say that goods held in trust should be restored with such and such a guarantee, or in such and such a way; because the greater the number of conditions added, the greater the number of ways in which the principle may fail, so that it be not right to restore or not to restore.

Consequently we must say that the natural law, as to general principles, is the same for all, both as to rectitude and as to knowledge. But as to certain matters of detail, which are conclusions, as it were, of those general principles, it is the same for all in the majority of cases, both as to rectitude and as to knowledge; and yet in some few cases it may fail, both as to rectitude, by reason of certain obstacles (just as natures subject to generation and corruption fail in some few cases on account of some obstacle), and as to knowledge, since in some the reason is perverted by passion, or evil habit, or an evil disposition of nature; thus formerly, theft, although it is expressly contrary to the natural law, was not considered wrong among the Germans, as Julius Caesar relates (De Bello Gall. vi).

Later Protestant traditions walk away from this ancient but pagan heritage to some degree, preferring to return to Scripture alone. And indeed, Aristotle's ethics and the classical ethics that follow from it differ substantially from, say, the Ten Commandments. There is no prohibition against murder, though there is a virtue of justice and a vice of lawlessness. There is no prohibition against having other gods, but there is a virtue of piety and a vice of blasphemy. 

The two come down very similarly on the duty to respect one's father and mother, and not to bear false witness against one's neighbors, however, as well as on many other points. 

No comments: