The Nicomachean ethics of Aristotle

that Intellectual Operation which is purely Speculative, and concerned neither with action nor production, because this is manifestly the work of every Intellectual faculty, while of the faculty which is of a mixed Practical and Intellectual nature, the work is that Truth which, as I have described above, corresponds to the right movement of the Will. Now the starting-point of moral action is Moral Choice, (I mean, what actually sets it in motion, not the final cause,)[7] and of Moral Choice, Appetition, and Reason directed to a certain result: and thus Moral Choice is neither independent of intellect, i. e. intellectual operation, nor of a certain moral state: for right or wrong action cannot be, independently of operation of the Intellect, and moral character. But operation of the Intellect by itself moves nothing, only when directed to a certain result, i. e. exercised in Moral Action: (I say nothing of its being exercised in production, because this function is originated by the former: for every one who makes makes with a view to somewhat further; and that which is or may be made, is not an End in itself, but only relatively to somewhat else, and belonging to some one:[8] whereas that which is or may be done is an End in itself, because acting well is an End in itself, and this is the object of the Will,) and so Moral Choice is either[9] Intellect put in a position of Will-ing, or Appetition subjected to an Intellectual Process. And such a Cause is Man. But nothing which is done and past can be the object of Moral Choice; for instance, no man chooses to have sacked Troy; because, in fact, no one ever deliberates about what is past, but only about that which is future, and which may therefore be influenced, whereas what has been cannot not have been: and so Agathon is right in saying “Of this alone is Deity bereft, To make undone whatever hath been done.” Thus then Truth is the work of both the Intellectual Parts of the Soul; those states therefore are the Excellences of each in which each will best attain truth. Chapter III. Commencing then from the point stated above we will now speak of these Excellences again. Let those faculties whereby the Soul attains truth in Affirmation or Negation, be assumed to be in number five:[10] viz. Art, Knowledge, Practical Wisdom, Science, Intuition: (Supposition and Opinion I do not include, because by these one may go wrong.) What Knowledge is, is plain from the following of considerations, if one is to speak accurately, instead of being led away by resemblances. For we all conceive that what we strictly speaking know, cannot be otherwise than it is, because as to those things which can be otherwise than they are, we are uncertain whether they are or are not, the moment they cease to be within the sphere of our actual observation. So then, whatever comes within the range of Knowledge is by necessity, and therefore eternal, (because all things are so which exist necessarily,) and all eternal things are without beginning, and indestructible. Again, all Knowledge is thought to be capable of being taught, and what comes within its range capable of being learned. And all teaching is based upon previous knowledge; (a statement you will find in the Analytics also,)[11] for there are two ways of teaching, by Syllogism and by Induction. In fact. Induction is the source of universal propositions, and Syllogism reasons from these universals.[12] Syllogism then may reason from principles which cannot be themselves proved Syllogistically: and therefore must by Induction. So Knowledge is “a state or mental faculty apt to demonstrate syllogistically,” &c. as in the Analytics:[13] because a man, strictly and properly speaking, _knows_, when he establishes his conclusion in a certain way, and the principles are known to him: for if they are not better known to him than the conclusion, such knowledge as he has will be merely accidental. Let thus much be accepted as a definition of Knowledge. Chapter IV. Matter which may exist otherwise than it actually does in any given case (commonly called Contingent) is of two kinds, that which is the object of Making, and that which is the object of Doing; now Making and Doing are two different things (as we show in the exoteric treatise), and so that state of mind, conjoined with Reason, which is apt to Do, is distinct from that also conjoined with Reason, which is apt to Make: and for this reason they are not included one by the other, that is, Doing is not Making, nor Making Doing.[14] Now[15] as Architecture is an Art, and is the same as “a certain state of mind, conjoined with Reason, which is apt to Make,” and as there is no Art which is not such a state, nor any such state which is not an Art, Art, in its strict and proper sense, must be “a state of mind, conjoined with true Reason, apt to Make.” Now all Art has to do with production, and contrivance, and seeing how any of those things may be produced which may either be or not be, and the origination of which rests with the maker and not with the thing made. And, so neither things which exist or come into being necessarily, nor things in the way of nature, come under the province of Art, because these are self-originating. And since Making and Doing are distinct, Art must be concerned with the former and not the latter. And in a certain sense Art and Fortune are concerned with the same things, as, Agathon says by the way, “Art Fortune loves, and is of her beloved.” So Art, as has been stated, is “a certain state of mind, apt to Make, conjoined with true Reason;” its absence, on the contrary, is the same state conjoined with false Reason, and both are employed upon Contingent matter. Chapter V. As for Practical Wisdom, we shall ascertain its nature by examining to what kind of persons we in common language ascribe it.[16] It is thought then to be the property of the Practically Wise man to be able to deliberate well respecting what is good and expedient for himself, not in any definite line,[17] as what is conducive to health or strength, but what to living well. A proof of this is that we call men Wise in this or that, when they calculate well with a view to some good end in a case where there is no definite rule. And so, in a general way of speaking, the man who is good at deliberation will be Practically Wise. Now no man deliberates respecting things which cannot be otherwise than they are, nor such as lie not within the range of his own action: and so, since Knowledge requires strict demonstrative reasoning, of which Contingent matter does not admit (I say Contingent matter, because all matters of deliberation must be Contingent and deliberation cannot take place with respect to things which are Necessarily), Practical Wisdom cannot be Knowledge nor Art; nor the former, because what falls under the province of Doing must be Contingent; not the latter, because Doing and Making are different in kind. It remains then that it must be “a state of mind true, conjoined with Reason, and apt to Do, having for its object those things which are good or bad for Man:” because of Making something beyond itself is always the object, but cannot be of Doing because the very well-doing is in itself an End. For this reason we think Pericles and men of that stamp to be Practically Wise, because they can see what is good for themselves and for men in general, and we also think those to be such who are skilled in domestic management or civil government. In fact, this is the reason why we call the habit of perfected self-mastery by the name which in Greek it bears, etymologically signifying “that which preserves the Practical Wisdom:” for what it does preserve is the Notion I have mentioned, _i.e._ of one’s own true interest.[18] For it is not every kind of Notion which the pleasant and the painful corrupt and pervert, as, for instance, that “the three angles of every rectilineal triangle are equal to two right angles,” but only those bearing on moral action. For the Principles of the matters of moral action are the final cause of them:[19] now to the man who has been corrupted by reason of pleasure or pain the Principle immediately becomes obscured, nor does he see that it is his duty to choose and act in each instance with a view to this final cause and by reason of it: for viciousness has a tendency to destroy the moral Principle: and so Practical Wisdom must be “a state conjoined with reason, true, having human good for its object, and apt to do.” Then again Art admits of degrees of excellence, but Practical Wisdom does not:[20] and in Art he who goes wrong purposely is preferable to him who does so unwittingly,[21] but not so in respect of Practical Wisdom or the other Virtues. It plainly is then an Excellence of a certain kind, and not an Art. Now as there are two parts of the Soul which have Reason, it must be the Excellence of the Opinionative [which we called before calculative or deliberative], because both Opinion and Practical Wisdom are exercised upon Contingent matter. And further, it is not simply a state conjoined with Reason, as is proved by the fact that such a state may be forgotten and so lost while Practical Wisdom cannot. Chapter VI. Now Knowledge is a conception concerning universals and Necessary matter, and there are of course certain First Principles in all trains of demonstrative reasoning (that is of all Knowledge because this is connected with reasoning): that faculty, then, which takes in the first principles of that which comes under the range of Knowledge, cannot be either Knowledge, or Art, or Practical Wisdom: not Knowledge, because what is the object of Knowledge must be derived from demonstrative reasoning; not either of the other two, because they are exercised upon Contingent matter only. Nor can it be Science which takes in these, because the Scientific Man must in some cases depend on demonstrative Reasoning. It comes then to this: since the faculties whereby we always attain truth and are never deceived when dealing with matter Necessary or even Contingent are Knowledge, Practical Wisdom, Science, and Intuition, and the faculty which takes in First Principles cannot be any of the three first; the last, namely Intuition, must be it which performs this function. Chapter VII. Science is a term we use principally in two meanings: in the first place, in the Arts we ascribe it to those who carry their arts to the highest accuracy;[22] Phidias, for instance, we call a Scientific or cunning sculptor; Polycleitus a Scientific or cunning statuary; meaning, in this instance, nothing else by Science than an excellence of art: in the other sense, we think some to be Scientific in a general way, not in any particular line or in any particular thing, just as Homer says of a man in his Margites; “Him the Gods made neither a digger of the ground, nor ploughman, nor in any other way Scientific.” So it is plain that Science must mean the most accurate of all Knowledge; but if so, then the Scientific man must not merely know the deductions from the First Principles but be in possession of truth respecting the First Principles. So that Science must be equivalent to Intuition and Knowledge; it is, so to speak, Knowledge of the most precious objects, _with a head on_.[23] I say of the most precious things, because it is absurd to suppose πολιτικὴ,[24] or Practical Wisdom, to be the highest, unless it can be shown that Man is the most excellent of all that exists in the Universe. Now if “healthy” and “good” are relative terms, differing when applied to men or to fish, but “white” and “straight” are the same always, men must allow that the Scientific is the same always, but the