Book II, Chapter VI

Two things therefore have been made clear: first, that whoever aims at the good of the state aims at right;¹ and secondly, that the Roman people in bringing the world into subjection, aimed at the public weal. Therefore let us argue thus: Whoever aims at right, walks according to right; the Roman people in bringing the world into subjection aimed at right, as we have made manifest in the preceding chapter. Therefore in bringing the world into subjection the Roman people acted according to right, consequently it was by right that they assumed the dignity of Empire.

We reach this conclusion on grounds which are manifest to all. It is manifest from this, that whosoever aims at right, walks according to right. To make this clear, we must mark that everything is made to gain a certain end, otherwise it would be in vain, and as we said before this cannot be. And as everything has its proper end, so every end has some distinct thing of which it is the end. And therefore it is impossible that any two things, spoken of as separate things,² and in so far as they are two, should have the same end as their aim, for so the same absurdity³ would follow, that one of them would exist in vain. Since, then, there is a certain end of right, as we have explained, it necessarily follows that when we have decided what that end is, we have also decided what right is; for it is the natural and proper effect of right. And since in any sequence it is impossible to have an antecedent without its consequent, for instance, to have "man" without "animal," as is evident by putting together and taking to pieces the idea,⁴ so also it is impossible to seek for the end of right without right, for each thing stands in the same relation to its proper end, as the consequent does to its antecedent; as without health it is impossible to attain to a good condition of the body. Wherefore, it is most evidently clear that he who aims at the end of right must aim in accordance with right; nor does the contradictory instance which is commonly drawn from Aristotle's treatment of "good counsel" avail anything.⁵ He there says: "It is possible to obtain what is the right result from a syllogism, which is incorrect, but not by an argument which is right, for the middle term is wrong." For if sometimes a right conclusion is obtained from false principles, this is only by accident, and happens only in so far as the true conclusion is imported in the words of the inference. Truth never really follows from falsehood; but the signs of truth may easily follow from the signs of falsehood. So also it is in matters of conduct. If a thief helps a poor man out of the spoils of his thieving, we must not call that charity; but it is an action which would have the form of charity, if it had been done out of the man's own substance. And so of the end of right. If anything, such as the end of right, were gained without right, it would only be the end of right, that is, the common good, in the same sense that the gift, made from evil gains, is charity. And so the example proves nothing, for in our proposition we speak, not of the apparent but of the real end of right. What was sought, therefore, is clear.