Of the Difference Between Moral and Intellectual Virtues

Of the Difference Between Moral and Intellectual Virtues — St. Thomas Aquinas asks: Whether every virtue is a moral virtue?; Whether moral virtue differs from intellectual virtue?; Whether virtue is adequately divided into moral and intellectual?; Whether there can be moral without intellectual virtue?; Whether there can be intellectual without moral virtue?.

We must now consider moral virtues. We shall speak (1) of the difference between them and intellectual virtues; (2) of their distinction, one from another, in respect of their proper matter; (3) of the difference between the chief or cardinal virtues and the others.

Under the first head there are five points of inquiry:

Article 1: Whether every virtue is a moral virtue?

The Philosopher (Ethic. i, 13): "When we speak of a man's morals, we do not say that he is wise or intelligent, but that he is gentle or sober." Accordingly, then, wisdom and understanding are not moral virtues: and yet they are virtues, as stated above (). Therefore not every virtue is a moral virtue.

In order to answer this question clearly, we must consider the meaning of the Latin word "mos"; for thus we shall be able to discover what a "moral" virtue is. Now "mos" has a twofold meaning. For sometimes it means custom, in which sense we read (Acts 15:1): "Except you be circumcised after the manner (morem) of Moses, you cannot be saved." Sometimes it means a natural or quasi-natural inclination to do some particular action, in which sense the word is applied to dumb animals. Thus we read (2 Macc. 1:2) that "rushing violently upon the enemy, like lions [*Leonum more, i.e. as lions are in the habit of doing], they slew them": and the word is used in the same sense in Ps. 67:7, where we read: "Who maketh men of one manner [moris] to dwell in a house." For both these significations there is but one word in Latin; but in the Greek there is a distinct word for each, for the word "ethos" is written sometimes with a long, and sometimes a short "e".

Now "moral" virtue is so called from "mos" in the sense of a natural or quasi-natural inclination to do some particular action. And the other meaning of "mos," i.e. "custom," is akin to this: because custom becomes a second nature, and produces an inclination similar to a natural one. But it is evident that inclination to an action belongs properly to the appetitive power, whose function it is to move all the powers to their acts, as explained above (). Therefore not every virtue is a moral virtue, but only those that are in the appetitive faculty.

Article 2: Whether moral virtue differs from intellectual virtue?

It is stated in Ethic. i, 13 that "there are two kinds of virtue: some we call intellectual; some moral."

Reason is the first principle of all human acts; and whatever other principles of human acts may be found, they obey reason somewhat, but in various ways. For some obey reason blindly and without any contradiction whatever: such are the limbs of the body, provided they be in a healthy condition, for as soon as reason commands, the hand or the foot proceeds to action. Hence the Philosopher says (Polit. i, 3) that "the soul rules the body like a despot," i.e. as a master rules his slave, who has no right to rebel. Accordingly some held that all the active principles in man are subordinate to reason in this way. If this were true, for man to act well it would suffice that his reason be perfect. Consequently, since virtue is a habit perfecting man in view of his doing good actions, it would follow that it is only in the reason, so that there would be none but intellectual virtues. This was the opinion of Socrates, who said "every virtue is a kind of prudence," as stated in Ethic. vi, 13. Hence he maintained that as long as man is in possession of knowledge, he cannot sin; and that every one who sins, does so through ignorance.

Now this is based on a false supposition. Because the appetitive faculty obeys the reason, not blindly, but with a certain power of opposition; wherefore the Philosopher says (Polit. i, 3) that "reason commands the appetitive faculty by a politic power," whereby a man rules over subjects that are free, having a certain right of opposition. Hence Augustine says on Ps. 118 (Serm. 8) that "sometimes we understand [what is right] while desire is slow, or follows not at all," in so far as the habits or passions of the appetitive faculty cause the use of reason to be impeded in some particular action. And in this way, there is some truth in the saying of Socrates that so long as a man is in possession of knowledge he does not sin: provided, however, that this knowledge is made to include the use of reason in this individual act of choice.

Accordingly for a man to do a good deed, it is requisite not only that his reason be well disposed by means of a habit of intellectual virtue; but also that his appetite be well disposed by means of a habit of moral virtue. And so moral differs from intellectual virtue, even as the appetite differs from the reason. Hence just as the appetite is the principle of human acts, in so far as it partakes of reason, so are moral habits to be considered virtues in so far as they are in conformity with reason.

Article 3: Whether virtue is adequately divided into moral and intellectual?

The Philosopher says (Ethic. ii, 1) that "virtue is twofold, intellectual and moral."

Human virtue is a habit perfecting man in view of his doing good deeds. Now, in man there are but two principles of human actions, viz. the intellect or reason and the appetite: for these are the two principles of movement in man as stated in De Anima iii, text. 48. Consequently every human virtue must needs be a perfection of one of these principles. Accordingly if it perfects man's speculative or practical intellect in order that his deed may be good, it will be an intellectual virtue: whereas if it perfects his appetite, it will be a moral virtue. It follows therefore that every human virtue is either intellectual or moral.

Article 4: Whether there can be moral without intellectual virtue?

Gregory says (Moral. xxii) that "the other virtues, unless we do prudently what we desire to do, cannot be real virtues." But prudence is an intellectual virtue, as stated above (). Therefore moral virtues cannot be without intellectual virtues.

Moral virtue can be without some of the intellectual virtues, viz. wisdom, science, and art; but not without understanding and prudence. Moral virtue cannot be without prudence, because it is a habit of choosing, i.e. making us choose well. Now in order that a choice be good, two things are required. First, that the intention be directed to a due end; and this is done by moral virtue, which inclines the appetitive faculty to the good that is in accord with reason, which is a due end. Secondly, that man take rightly those things which have reference to the end: and this he cannot do unless his reason counsel, judge and command aright, which is the function of prudence and the virtues annexed to it, as stated above (). Wherefore there can be no moral virtue without prudence: and consequently neither can there be without understanding. For it is by the virtue of understanding that we know self-evident principles both in speculative and in practical matters. Consequently just as right reason in speculative matters, in so far as it proceeds from naturally known principles, presupposes the understanding of those principles, so also does prudence, which is the right reason about things to be done.

Article 5: Whether there can be intellectual without moral virtue?

To wish to do evil is directly opposed to moral virtue; and yet it is not opposed to anything that can be without moral virtue. Now it is contrary to prudence "to sin willingly" (Ethic. vi, 5). Therefore prudence cannot be without moral virtue.

Other intellectual virtues can, but prudence cannot, be without moral virtue. The reason for this is that prudence is the right reason about things to be done (and this, not merely in general, but also in particular); about which things actions are. Now right reason demands principles from which reason proceeds to argue. And when reason argues about particular cases, it needs not only universal but also particular principles. As to universal principles of action, man is rightly disposed by the natural understanding of principles, whereby he understands that he should do no evil; or again by some practical science. But this is not enough in order that man may reason aright about particular cases. For it happens sometimes that the aforesaid universal principle, known by means of understanding or science, is destroyed in a particular case by a passion: thus to one who is swayed by concupiscence, when he is overcome thereby, the object of his desire seems good, although it is opposed to the universal judgment of his reason. Consequently, as by the habit of natural understanding or of science, man is made to be rightly disposed in regard to the universal principles of action; so, in order that he be rightly disposed with regard to the particular principles of action, viz. the ends, he needs to be perfected by certain habits, whereby it becomes connatural, as it were, to man to judge aright to the end. This is done by moral virtue: for the virtuous man judges aright of the end of virtue, because "such a man is, such does the end seem to him" (Ethic. iii, 5). Consequently the right reason about things to be done, viz. prudence, requires man to have moral virtue.