1094aEvery art and every investigation, and likewise every practical pursuit or undertaking, seems to aim at some good: hence it has been well said that the Good is That at which all things aim. (It is true that a certain variety is to be observed among the ends at which the arts and sciences aim: in some cases the activity of practising the art is itself the end,¹ whereas in others the end is some product over and above the mere exercise of the art; and in the arts whose ends are certain things beside the practice of the arts themselves, these products are essentially superior in value to the activities.) But as there are numerous pursuits and arts and sciences, it follows that their ends are correspondingly numerous: for instance, the end of the science of medicine is health, that of the art of shipbuilding a vessel, that of strategy victory, that of domestic economy wealth. Now in cases where several such pursuits are subordinate to some single faculty—as bridle-making and the other trades concerned with horses’ harness are subordinate to horsemanship, and this and every other military pursuit to the science of strategy, and similarly other arts to different arts again—in all these cases, I say, the ends of the master arts are things more to be desired than the ends of the arts subordinate to them; since the latter ends are only pursued for the sake of the former. (And it makes no difference whether the ends of the pursuits are the activities themselves or some other thing beside these, as in the case of the sciences mentioned.)

If therefore among the ends at which our actions aim there be one which we will for its own sake, while we will the others only for the sake of this, and if we do not choose everything for the sake of something else (which would obviously result in a process ad infinitum, so that all desire would be futile and vain), it is clear that this one ultimate End must be the Good, and indeed the Supreme Good. Will not then a knowledge of this Supreme Good be also of great practical importance for the conduct of life? Will it not better enable us to attain our proper object, like archers having a target to aim at? If this be so, we ought to make an attempt to determine at all events in outline what exactly this Supreme Good is, and of which of the sciences or faculties it is the object. Now it would seem that this supreme End must be the object of the most authoritative of the sciences—some science which is pre-eminently a master-craft. But such is manifestly the science of Politics; for it is this that ordains which of the sciences are to exist in states, 1094band what branches of knowledge the different classes of the citizens are to learn, and up to what point; and we observe that even the most highly esteemed of the faculties, such as strategy, domestic economy, oratory, are subordinate to the political science. Inasmuch then as the rest of the sciences are employed by this one, and as it moreover lays down laws as to what people shall do and what things they shall refrain from doing, the end of this science must include the ends of all the others. Therefore, the Good of man must be the end of the science of Politics. For even though it be the case that the Good is the same for the individual and for the state, nevertheless, the good of the state is manifestly a greater and more perfect good, both to attain and to preserve.² To secure the good of one person only is better than nothing; but to secure the good of a nation or a state is a nobler and more divine achievement. This then being its aim, our investigation is in a sense the study of Politics.

Now our treatment of this science will be adequate, if it achieves that amount of precision which belongs to its subject matter. The same exactness must not be expected in all departments of philosophy alike, any more than in all the products of the arts and crafts. The subjects studied by political science are Moral Nobility³ and Justice; but these conceptions involve much difference of opinion and uncertainty, so that they are sometimes believed to be mere conventions and to have no real existence in the nature of things. And a similar uncertainty surrounds the conception of the Good, because it frequently occurs that good things have harmful consequences: people have before now been ruined by wealth, and in other cases courage has cost men their lives. We must therefore be content if, in dealing with subjects and starting from premises thus uncertain, we succeed in presenting a broad outline of the truth: when our subjects and our premises are merely generalities, it is enough if we arrive at generally valid conclusions. Accordingly we may ask the student also to accept the various views we put forward in the same spirit; for it is the mark of an educated mind to expect that amount of exactness in each kind which the nature of the particular subject admits. It is equally unreasonable to accept merely probable conclusions from a mathematician and to demand strict demonstration from an orator. Again, each man judges correctly those matters with which he is acquainted; it is of these that he is a competent critic. 1095aTo criticize a particular subject, therefore, a man must have been trained in that subject: to be a good critic generally, he must have had an all-round education. Hence the young are not fit to be students of Political Science.⁴ For they have no experience of life and conduct, and it is these that supply the premises and subject matter of this branch of philosophy. And moreover they are led by their feelings; so that they will study the subject to no purpose or advantage, since the end of this science is not knowledge but action. And it makes no difference whether they are young in years or immature in character: the defect is not a question of time, it is because their life and its various aims are guided by feeling; for to such persons their knowledge is of no use, any more than it is to persons of defective self-restraint.⁵ But Moral Science may be of great value to those who guide their desires and actions by principle. Let so much suffice by way of introduction as to the student of the subject, the spirit in which our conclusions are to be received, and the object that we set before us.

To resume, inasmuch as all studies and undertakings are directed to the attainment of some good, let us discuss what it is that we pronounce to be the aim of Politics, that is, what is the highest of all the goods that action can achieve. As far as the name goes, we may almost say that the great majority of mankind are agreed about this; for both the multitude and persons of refinement speak of it as Happiness,⁶ and conceive “the good life” or “doing well”⁷ to be the same thing as “being happy.” But what constitutes happiness is a matter of dispute; and the popular account of it is not the same as that given by the philosophers. Ordinary people identify it with some obvious and visible good, such as pleasure or wealth or honor—some say one thing and some another, indeed very often the same man says different things at different times: when he falls sick he thinks health is happiness, when he is poor, wealth. At other times, feeling conscious of their own ignorance, men admire those who propound something grand and above their heads; and it has been held by some thinkers⁸ that beside the many good things we have mentioned, there exists another Good, that is good in itself, and stands to all those goods as the cause of their being good. Now perhaps it would be a somewhat fruitless task to review all the different opinions that are held. It will suffice to examine those that are most widely prevalent, or that seem to have some argument in their favour. And we must not overlook the distinction between arguments that start from first principles and those that lead to first principles. It was a good practice of Plato to raise this question, and to enquire whether the true procedure is to start from or to lead up to one’s first principles, 1095bas in a race-course one may run from the judges to the far end of the track or the reverse. Now no doubt it is proper to start from the known. But “the known” has two meanings—“what is known to us,” which is one thing, and “what is knowable in itself,” which is another. Perhaps then for us⁹ at all events it proper to start from what is known to us. This is why in order to be a competent student of the Right and Just, and in short of the topics of Politics in general, the pupil is bound to have been well-trained in his habits. For the starting-point or first principle is the fact that a thing is so; if this be satisfactorily ascertained, there will be no need also to know the reason why it is so. And the man of good moral training knows first principles already, or can easily acquire them. As for the person who neither knows nor can learn, let him hear the words of Hesiod¹⁰: Best is the man who can himself advise; He too is good who hearkens to the wise; But who, himself being witless, will not heed Another’s wisdom, is a fool indeed.