Important excerpts from Aristotle’s Nicomachean Ethics


1. Every art or applied science, and every systematic investigation, and similarly every action and choice, seem to aim at some good; the good, therefore has been well defined as that at which all things aim: in some cases the activity is the end, in others the end is some product beyond the activity.  In cases where the end lies beyond the action the product is naturally superior to the activity. Since there are many activities, arts, and sciences, the number of ends is correspondingly large...
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2. Now if there exists an end in the realm of action which we desire for its own sake, an end which determines all our other desires; if, in other words, we do not make all our choices for the sake of something else,...then obviously this end will be the good, that is, the highest good.  Will not the knowledge of this good, consequently, be very important to our lives?... If so, we must try to comprehend in outline at least what this good is and to which branch of knowledge or to which capacity it belongs. This good, one should think, belongs to the most sovereign and most comprehensive master science, and politics clearly fits this description.  For it determines which sciences ought to exist in states, what kind of sciences each group of citizens must learn, and what degree of proficiency each must attain.  We observe further that the most honored capacities, such as strategy, household management, and oratory, are contained in politics.  Since this science uses the rest of the sciences, and since, moreover, it legislates what people are to do and what they are not to do, its ends seems to embrace the ends of the other sciences.  Thus it follows that the end of politics is the good for man.  For even if the good is the same for the individual and the state, the good of the state is the greater and more perfect thing to attain and to safeguard.
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3.)...a young man is not equipped to be a student of politics; for he has no experience in the actions which life demands of him, and these actions form the basis and subject matter of the discussion.  Moreover, since he follows his emotions, his study will be pointless and unprofitable, for the end of this kind of study is not knowledge but action. Whether he is young in years or immature in character makes no difference, for his deficiency is not a matter of time but of living and of pursuing his interests under the influence of his emotions.  Knowledge brings no benefit to this kind of person, just as it brings none to the morally weak.  But those who regulate their desires and actions by a rational principle will greatly benefit from a knowledge of this subject.
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 4.) ...since all knowledge and every choice is directed toward some good, let us discuss what is in our view the aim of politics, i.e., the highest good attainable by action.  As far as its name is concerned, most people would probably agree: for both the common run of people and cultivated men call it happiness (eudaimonia), and understand by "being happy" the same as "living well" and "doing well."  But when it comes to defining what happiness is, they disagree, and the account given by the common run differs from that of the philosophers.  The former say it is some clear and obvious good, such as pleasure, wealth, or honor; some say it is one thing and others another, and often the very same person identifies it with different things at different times: when he is sick he thinks it is health, and when he is poor he says it is wealth; and when people are conscious of their own ignorance, the admire those who talk above their heads in accents of greatness.  Some thinkers used to believe that there exists over and above these many goods another good, good in itself and by itself, which also is the cause of good in all these things.
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5.) ...to be a competent student of what is right and just, and of politics generally, one must first have received a proper upbringing in moral conduct.
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6.) It is not unreasonable that men should derive their concept of the good and of happiness from the lives which they lead.  The common run of people and the most vulgar identify it with pleasure, and for that reason are satisfied with a life of enjoyment.  For the most notable kinds of life are three: the life just mentioned, the political life, and the contemplative life.  The common run of people, as we saw, betray their utter slavishness in their preference for a life suitable to cattle.... Cultivated and active men, on the other hand, believe the good to be honor, for honor, one might say, is the end of the political life. But this is clearly too superficial an answer: for honor seems to depend on those who confer it rather than on him who receives it, whereas our guess is that the good is a man's own possession which cannot easily be taken away from him. Furthermore,...they want to be honored on the basis of their virtue or excellence (arete). Obviously, then, excellence, as far as they are concerned, is better than honor.  One might perhaps even go so far as to consider excellence (arete) rather than honor the end of political life.  However, even excellence proves to be imperfect as an end: for a man might possibly possess it while asleep or while being inactive in all his life, and while, in addition, undergoing the greatest suffering and misfortune.  Nobody would call the life of such a man happy, except for the sake of maintaining an argument....  In the third place there is the contemplative life, which we shall examine later on.
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7....the term "good" has as many meanings as the word "is": it is used to describe substances, e.g., divinity and intelligence are good; qualities, e.g., the virtues are good; quantities, e.g., the proper amount is good; time, e.g., the right moment is good; place, e.g., a place to live is good; and so forth.  It is clear, therefore, that the good cannot be something universal, common to all cases, and single; for it if were, it would not be applicable in all categories but only in one.
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 8. [Good] is evidently something different in different actions and in each art; it is one thing in medicine, another in strategy, and another again in each of the other arts.  What then, is the good of each?  Is it not that for the sake of which everything else is done?  That means it is health in the case of medicine, victory in the case of strategy, a house in the case of building, a different thing in the case of different arts, and in all actions and choices it is the end.  For it is for the sake of the end that all else is done.  Thus, if there is some one end for all that we do, this would be the good attainable by action; if there are several ends, they will be the goods attainable by action. ...Since there are evidently several ends, and since we choose some of these...as a means to something else, it is obvious that not all ends are final.  The highest good, on the other hand, must be something final.... What is always chosen as an end in itself and never as a means to something else is called final in the unqualified sense.  This description seems to apply to happiness above all else: for we always choose happiness as an end in itself and never for the sake of something else.  Honor, pleasure, intelligence, and all virtue we choose partly for themselves--for we would choose each of them even if no further advantage would accrue from them--but we also choose them partly for the sake of happiness, because we assume that it is through them that we will be happy.
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9.  To call happiness the highest good is perhaps a little too trite, and a clearer account of what it is, is still required.  Perhaps this is best done by first ascertaining the proper function of man.... the goodness and performance of man would seem to reside in whatever is his proper function....What can this function possible be?  Simply living?  He shares that even with plants, but we are now looking for something peculiar to man.  Accordingly, the life of nutrition and growth must be excluded.  Next in line there is a life of sense perception.  But this, too, man has in common with the horse, the ox, and every animal.  There remains then an active life of the rational element.  The rational element has two parts: one is rational in that it obeys the rule of reason, the other in that it possesses and conceives rational rules.  Since the expression "life of the rational element" also can be used in two senses, we must make it clear that we mean a life determined by the activity, as opposed to the mere possession, of the rational element....The proper function of man, then, consists in an activity of the soul in conformity with a rational principle or, at least, not without it.  In speaking of the proper function of a given individual we mean that it is the same in kind as the function of an individual who sets high standards for himself: the proper function of a harpist, for example, is the same as the function of a harpist who has set high standards for himself.  The same applies to any and every group of individuals: the full attainment of excellence must be added to the mere function.  In other words, the function of the harpist is to play the harp; the function of the harpist who has high standards is to play it well.  On these assumptions, if we take the proper function of man to be a certain kind of life, and if this kind of life is an activity of the soul and consists in actions performed in conjunction with the rational element, and if a man of high standards is he who performs these actions well and properly, and if a function is well performed when it is performed in accordance with the excellence appropriate to it; we reach the conclusion that the good of man is an activity of the soul in conformity with excellence or virtue, and if there are several virtues, in conformity with the best and most complete. But we must add "in a complete life." For one swallow does not make a spring, nor does one sunny day; similarly, one day or a short time does not make a man blessed and happy.
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 10. Virtue...consists of two kinds, intellectual virtue and moral virtue.  Intellectual virtue or excellence owes its origin and development chiefly to teaching, and for that reason requires experience and time.  Moral virtue, on the other hand, is formed by habit, ethos, and its name, ethike, is therefore derived, by a slight variation, from ethos. This shows, too, that none of the moral virtues is implanted in us by nature, for nothing which exists by nature can be changed by habit.  For example, it is impossible for a stone, which has a natural downward movement, to become habituated to moving upward, even if one should try ten thousand times to inculcate the habit by throwing it in the air...Thus the virtues are implanted in us neither by nature nor contrary to nature; we are by nature equipped with the ability to receive them, and habit brings this ability to completion and fulfillment....The virtues...we acquire by first having put them into action, and the same is also true of the arts.  For the things which we have to learn before we can do them we learn by doing: men become builders by building houses, and harpists by playing the harp. Similarly, we become just by the practice of just actions, self-controlled by exercising self-control, and courageous by performing acts of courage. This is corroborated by what happens in states. Lawmakers make the citizens good by inculcating good habits in them, and this is the aim of every lawgiver. ...characteristics develop from corresponding activities. For that reason, we must see to it that our activities are of a certain kind, since any variations in them will be reflected in our characteristics.  Hence, it is no small matter whether one habit or another is inculcated in us from early childhood; on the contrary, it makes a considerable difference, or, rather, all the difference.
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11.  The nature of moral qualities is such that they are destroyed by defect and by excess.  We see the same thing happen in the case of strength and of health, to illustrate, as we must, the invisible by means of visible examples: excess as well as deficiency of physical exercise destroys our strength, and similarly, too much and too little food and drink destroys our health; the proportionate amount, however, produces, increases, and preserves it.  The same applies to self-control, courage, and the other virtues: the man who shuns and fears everything and never stands his ground becomes a coward, whereas a man who knows no fear at all and goes to meet every danger becomes reckless.  Similarly, a man who revels in every pleasure and abstains from none becomes self-indulgent, while he who avoids every pleasure like a boor becomes what might be called insensitive.  Thus we see that self-control and courage are destroyed by excellence and by deficiency and are preserved by the mean.
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12....moral excellence is concerned with pleasure and pain; it is pleasure that makes us do base actions and pain that prevents us from doing noble actions.  For that reason, as Plato says, men must be brought up from childhood to feel pleasure and pain at the proper things; for this is correct education.
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13. In the arts, excellence lies in the result itself, so that it is sufficient if it is of a certain kind. But in the case of the virtues an act is not performed justly or with self-control if the act itself is of a certain kind, but only if in addition the agent has certain characteristics as he performs it; first of all, he must know what he is doing; secondly, he must choose to act the way he does, and he must choose it for its own sake; and in the third place, the act must spring from a firm and unchangeable character....for the mastery of the virtues,... knowledge is of little or no importance, whereas the other two conditions count not for a little but are all-decisive, since repeated acts of justice and self-control result in the possession of these virtues. In other words, acts are called just and self-controlled when they are the kind of acts which a just or self-controlled man would perform; but the just and self-controlled man is not he who performs these acts, but he who also performs them in the way just and self-controlled men do.
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14. We may thus conclude that virtue or excellence is a characteristic involving choice, and that it consists in observing the mean relative to us, a mean which is defined by a rational principle, such as a man of practical wisdom would use to determine it.
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15....happiness is activity in conformity with virtue...
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16. A man whose activity is guided by intelligence, who cultivates his intelligence and keeps it in the best condition, seems to be the most beloved of the gods.