The Essays of Adam Smith

In the system of Plato (See Plato de Rep. lib. iv.) the soul is considered as something like a little state or republic, composed of three different faculties or orders.

The first is the judging faculty, the faculty which determines not only what are the proper means for attaining any end, but also what ends are fit to be pursued, and what degree of relative value we ought to put upon each. This faculty Plato called, as it is very properly called, reason, and considered it as what had a right to be the governing principle of the whole. Under this appellation, it is evident, he comprehended not only that faculty by which we judge of truth and falsehood, but that by which we judge of the propriety or the impropriety of our desires and affections.

The different passions and appetites, the natural subjects of this ruling principle, but which are so apt to rebel against their master, he reduced to two different classes or orders. The first consisted of those passions, which are founded in pride and resentment, or in what the schoolmen called the irascible part of the soul; ambition, animosity, the love of honour, and the dread of shame, the desire of victory, superiority, and revenge; all those passions, in short, which are supposed either to rise from, or to denote what, by a metaphor in our language, we commonly call spirit or natural fire. The second consisted of those passions which are founded in the love of pleasure, or in what the schoolmen called the concupiscible part of the soul. It comprehended all the appetites of the body, the love of ease and of security, and of all the sensual gratifications.

It rarely happens that we break in upon that plan of conduct, which the governing principle prescribes, and which in all our cool hours we had laid down to ourselves as what was most proper for us to pursue, but when prompted by one or other of those two different sets of passions; either by ungovernable ambition and resentment, or by the importunate solicitations of present ease and pleasure. But though these two orders of passions are so apt to mislead us, they are still considered as necessary parts of human nature: the first having been given to defend us against injuries, to assert our rank and dignity in the world, to make us aim at what is noble and honourable, and to make us distinguish those who act in the same manner; the second, to provide for the support and necessities of the body.

In the strength, acuteness, and perfection of the governing principle was placed the essential virtue of prudence, which, according to Plato, consisted in a just and clear discernment, founded upon general and scientific ideas, of the ends which were proper to be pursued, and of the means which were proper for attaining them.

When the first set of passions, those of the irascible part of the soul, had that degree of strength and firmness, which enabled them, under the direction of reason, to despise all dangers in the pursuit of what was honourable and noble; it constituted the virtue of fortitude and magnanimity. This order of passions, according to this system, was of a more generous and noble nature than the other. They were considered upon many occasions as the auxiliaries of reason, to check and restrain the inferior and brutal appetites. We are often angry at ourselves, it was observed, we often become the objects of our own resentment and indignation, when the love of pleasure prompts to do what we disapprove of; and the irascible part of our nature is in this manner called in to assist the rational against the concupiscible.

When all those three different parts of our nature were in perfect concord with one another, when neither the irascible nor concupiscible passions ever aimed at any gratification which reason did not approve of, and when reason never commanded any thing, but what these of their own accord were willing to perform: this happy composure, this perfect and complete harmony of soul, constituted that virtue which in their language is expressed by a word which we commonly translate temperance, but which might more properly be translated good temper, or sobriety and moderation of mind.

Justice, the last and greatest of the four cardinal virtues, took place, according to this system, when each of those three faculties of the mind confined itself to its proper office, without attempting to encroach upon that of any other; when reason directed and passion obeyed, and when each passion performed its proper duty, and exerted itself towards its proper object easily and without reluctance, and with that degree of force and energy, which was suitable to the value of what it pursued. In this consisted that complete virtue, that perfect propriety of conduct, which Plato, after some of the ancient Pythagoreans, has well denominated Justice.

The word, it is to be observed, which expresses justice in the Greek language, has several different meanings; and as the correspondent word in all other languages, so far as I know, has the same, there must be some natural affinity among those various significations. In one sense we are said to do justice to our neighbour when we abstain from doing him any positive harm, and do not directly hurt him, either in his person, or in his estate, or in his reputation. This is that justice which I have treated of above, the observance of which may be extorted by force, and the violation of which exposes to punishment. In another sense we are said not to do justice to our neighbour unless we conceive for him all that love, respect, and esteem, which his character, his situation, and his connexion with ourselves, render suitable and proper for us to feel, and unless we act accordingly. It is in this sense that we are said to do injustice to a man of merit who is connected with us, though we abstain from hurting him in every respect, if we do not exert ourselves to serve him and to place him in that situation in which the impartial spectator would be pleased to see him.

The first sense of the word coincides with what Aristotle and the Schoolmen call commutative justice, and with what Grotius calls the justitia expletrix, which consists in abstaining from what is another's, and in doing voluntarily whatever we can with propriety be forced to do. The second sense of the word coincides with what some have called distributive justice, and with the justitia attributrix of Grotius, which consists in proper beneficence, in the becoming use of what is our own, and in the applying it to those purposes, either of charity or generosity, to which it is most suitable, in our situation, that it should be applied. In this sense justice comprehends all the social virtues. There is yet another sense in which the word justice is sometimes taken, still more extensive than either of the former, though very much akin to the last; and which runs too, so far as I know, through all languages. It is in this last sense that we are said to be unjust, when we do not seem to value any particular object with that degree of esteem, or to pursue it with that degree of ardour which to the impartial spectator it may appear to deserve or to be naturally fitted for exciting.

Thus we are said to do injustice to a poem or a picture, when we do not admire them enough, and we are said to do them more than justice when we admire them too much. In the same manner we are said to do injustice to ourselves when we appear not to give sufficient attention to any particular object of self-interest. In this last sense, what is called justice means the same thing with exact and perfect propriety of conduct and behaviour, and comprehends in it, not only the offices of both commutative and distributive justice, but of every other virtue, of prudence, of fortitude, of temperance. It is in this last sense that Plato evidently understands what he calls justice, and which, therefore, according to him, comprehends in it the perfection of every sort of virtue.

Such is the account given by Plato of the nature of virtue, or of that temper of mind which is the proper object of praise and approbation. It consists, according to him, in that state of mind in which every faculty confines itself within its proper sphere without encroaching upon that of any other, and performs its proper office with that precise degree of strength and vigour which belongs to it. His account, it is evident, coincides in every respect with what we have said above concerning the propriety of conduct.