Objection 2: Further, justice is the means of rectifying a man's operations in relation to another man. Now such like operations cannot be rectified unless the passions be rectified, because it is owing to disorder of the passions that there is disorder in the aforesaid operations: thus sexual lust leads to adultery, and overmuch love of money leads to theft. Therefore justice must needs be about the passions.
Objection 3: Further, even as particular justice is towards another person so is legal justice. Now legal justice is about the passions, else it would not extend to all the virtues, some of which are evidently about the passions. Therefore justice is about the passions.
On the contrary, The Philosopher says (Ethic. v, 1) that justice is about operations.
I answer that, The true answer to this question may be gathered from a twofold source. First from the subject of justice, i.e. from the will, whose movements or acts are not passions, as stated above (FS, Q[22], A[3]; FS, Q[59], A[4]), for it is only the sensitive appetite whose movements are called passions. Hence justice is not about the passions, as are temperance and fortitude, which are in the irascible and concupiscible parts. Secondly, on he part of the matter, because justice is about man's relations with another, and we are not directed immediately to another by the internal passions. Therefore justice is not about the passions.
Reply to Objection 1: Not every moral virtue is about pleasure and pain as its proper matter, since fortitude is about fear and daring: but every moral virtue is directed to pleasure and pain, as to ends to be acquired, for, as the Philosopher says (Ethic. vii, 11), "pleasure and pain are the principal end in respect of which we say that this is an evil, and that a good": and in this way too they belong to justice, since "a man is not just unless he rejoice in just actions" (Ethic. i, 8).
Reply to Objection 2: External operations are as it were between external things, which are their matter, and internal passions, which are their origin. Now it happens sometimes that there is a defect in one of these, without there being a defect in the other. Thus a man may steal another's property, not through the desire to have the thing, but through the will to hurt the man; or vice versa, a man may covet another's property without wishing to steal it. Accordingly the directing of operations in so far as they tend towards external things, belongs to justice, but in so far as they arise from the passions, it belongs to the other moral virtues which are about the passions. Hence justice hinders theft of another's property, in so far as stealing is contrary to the, equality that should be maintained in external things, while liberality hinders it as resulting from an immoderate desire for wealth. Since, however, external operations take their species, not from the internal passions but from external things as being their objects, it follows that, external operations are essentially the matter of justice rather than of the other moral virtues.
Reply to Objection 3: The common good is the end of each individual member of a community, just as the good of the whole is the end of each part. On the other hand the good of one individual is not the end of another individual: wherefore legal justice which is directed to the common good, is more capable of extending to the internal passions whereby man is disposed in some way or other in himself, than particular justice which is directed to the good of another individual: although legal justice extends chiefly to other virtues in the point of their external operations, in so far, to wit, as "the law commands us to perform the actions of a courageous person . . . the actions of a temperate person . . . and the actions of a gentle person" (Ethic. v, 5).
Whether the mean of justice is the real mean?
Objection 1: It would seem that the mean of justice is not the real mean. For the generic nature remains entire in each species. Now moral virtue is defined (Ethic. ii, 6) to be "an elective habit which observes the mean fixed, in our regard, by reason." Therefore justice observes the rational and not the real mean.
Objection 2: Further, in things that are good simply, there is neither excess nor defect, and consequently neither is there a mean; as is clearly the case with the virtues, according to Ethic. ii, 6. Now justice is about things that are good simply, as stated in Ethic. v. Therefore justice does not observe the real mean.
Objection 3: Further, the reason why the other virtues are said to observe the rational and not the real mean, is because in their case the mean varies according to different persons, since what is too much for one is too little for another (Ethic. ii, 6). Now this is also the case in justice: for one who strikes a prince does not receive the same punishment as one who strikes a private individual. Therefore justice also observes, not the real, but the rational mean.
On the contrary, The Philosopher says (Ethic. ii, 6; v, 4) that the mean of justice is to be taken according to "arithmetical" proportion, so that it is the real mean.
I answer that, As stated above (A[9]; FS, Q[59], A[4]), the other moral virtues are chiefly concerned with the passions, the regulation of which is gauged entirely by a comparison with the very man who is the subject of those passions, in so far as his anger and desire are vested with their various due circumstances. Hence the mean in such like virtues is measured not by the proportion of one thing to another, but merely by comparison with the virtuous man himself, so that with them the mean is only that which is fixed by reason in our regard.
On the other hand, the matter of justice is external operation, in so far as an operation or the thing used in that operation is duly proportionate to another person, wherefore the mean of justice consists in a certain proportion of equality between the external thing and the external person. Now equality is the real mean between greater and less, as stated in Metaph. x [*Didot ed., ix, 5; Cf. Ethic. v, 4]: wherefore justice observes the real mean.
Reply to Objection 1: This real mean is also the rational mean, wherefore justice satisfies the conditions of a moral virtue.
Reply to Objection 2: We may speak of a thing being good simply in two ways. First a thing may be good in every way: thus the virtues are good; and there is neither mean nor extremes in things that are good simply in this sense. Secondly a thing is said to be good simply through being good absolutely i.e. in its nature, although it may become evil through being abused. Such are riches and honors; and in the like it is possible to find excess, deficiency and mean, as regards men who can use them well or ill: and it is in this sense that justice is about things that are good simply.
Reply to Objection 3: The injury inflicted bears a different proportion to a prince from that which it bears to a private person: wherefore each injury requires to be equalized by vengeance in a different way: and this implies a real and not merely a rational diversity.
Whether the act of justice is to render to each one his own?
Objection 1: It would seem that the act of justice is not to render to each one his own. For Augustine (De Trin. xiv, 9) ascribes to justice the act of succoring the needy. Now in succoring the needy we give them what is not theirs but ours. Therefore the act of justice does not consist in rendering to each one his own.
Objection 2: Further, Tully says (De Offic. i, 7) that "beneficence which we may call kindness or liberality, belongs to justice." Now it pertains to liberality to give to another of one's own, not of what is his. Therefore the act of justice does not consist in rendering to each one his own.
Objection 3: Further, it belongs to justice not only to distribute things duly, but also to repress injurious actions, such as murder, adultery and so forth. But the rendering to each one of what is his seems to belong solely to the distribution of things. Therefore the act of justice is not sufficiently described by saying that it consists in rendering to each one his own.
On the contrary, Ambrose says (De Offic. i, 24): "It is justice that renders to each one what is his, and claims not another's property; it disregards its own profit in order to preserve the common equity."
I answer that, As stated above (AA[8],10), the matter of justice is an external operation in so far as either it or the thing we use by it is made proportionate to some other person to whom we are related by justice. Now each man's own is that which is due to him according to equality of proportion. Therefore the proper act of justice is nothing else than to render to each one his own.
Reply to Objection 1: Since justice is a cardinal virtue, other secondary virtues, such as mercy, liberality and the like are connected with it, as we shall state further on (Q[80], A[1]). Wherefore to succor the needy, which belongs to mercy or pity, and to be liberally beneficent, which pertains to liberality, are by a kind of reduction ascribed to justice as to their principal virtue.
This suffices for the Reply to the Second Objection.