While Alexander accomplished this great work—for he was the greatest individual at the head of Greece, he ever kept science and art in mind. Just as in modern times we have once more met with warriors who thought of science and of art in their campaigns, we also find that Alexander made an arrangement whereby whatever was discovered in the way of animals and plants in Asia should be sent to Aristotle, or else drawings and descriptions of the same. This consideration on Alexander’s part afforded to Aristotle a most favourable opportunity of collecting treasures for his study of nature. Pliny (Histor. natur. VIII., 17 ed. Bip.) relates that Alexander directed about a thousand men, who lived by hunting, fishing and fowling, the overseers of the zoological gardens, aviaries, and tanks of the Persian kingdom, to supply Aristotle with what was remarkable from every place. In this way Alexander’s campaign in Asia had the further effect of enabling Aristotle to found the science of natural history, and to be the author, according to Pliny, of a natural history in fifty parts.
After Alexander commenced his journey to Asia, Aristotle returned to Athens, and made his appearance as a public teacher in the Lyceum, a pleasure-ground which Pericles had made for the exercising of recruits; it consisted of a temple dedicated to Apollo (Λύκειος), and shady walks (περίπατοι), which were enlivened by trees, fountains and colonnades. It was from these walks that his school received the name of Peripatetics, and not from any walking about on the part of Aristotle—because, it is said, he delivered his discourses usually while walking. He lived and taught in Athens for thirteen years. But after the death of Alexander there broke out a tempest which had, as it appeared, been long held back through fear of Alexander; Aristotle was accused of impiety. The facts are differently stated: amongst other things it is said that his hymn to Hermias and the inscription on the statue dedicated to him were laid to his charge. When he saw the storm gathering, he escaped to Chalcis in Eub\na, the present Negropont, in order, as he himself said, that the Athenians should not have an opportunity of once more sinning against Philosophy. There he died, in the next year, in the sixty-third year of his age, Ol. 114, 3 (322 B.C.).[83] We derive Aristotle’s philosophy from his writings; but when we consider their history and nature, so far as externals are concerned, the difficulty of deriving a knowledge of his philosophy from them seems much increased. I cannot certainly enter into details regarding these last. Diogenes Laërtius (V. 21-27) mentions a very large number of them, but by their titles we do not always quite know which of those now in our possession are indicated, since the titles are entirely different. Diogenes gives the number of lines as four hundred and forty-five thousand, two hundred and seventy, and, if we count about ten thousand lines in a printer’s alphabet, this gives us forty-four alphabets. What we now have might perhaps amount to about ten alphabets, so that we have only about the fourth part left to us. The history of the Aristotelian manuscripts has been stated to be such that it would really seem impossible, or almost hopeless, that any one of his writings should have been preserved to us in its original condition, and not corrupted. Doubts regarding their genuine character could not in such circumstances fail to exist; and we can only wonder at seeing them come down to us even in the condition in which they are. For, as we have said, Aristotle made them known but little during his lifetime, and he left his writings to Theophrastus, his successor, with the rest of his immense library. This, indeed, is the first considerable library, collected as it was by means of personal wealth along with Alexander’s assistance, and hence it also reveals to us Aristotle’s learning. Later on, it came partially, or in some cases in duplicate, to Alexandria, and formed the basis of the Ptolemaic library, which, on the taking of Alexandria by Julius Cæsar, became a prey to fire. But of the manuscripts of Aristotle himself it is said that Theophrastus left them by will to a certain Neleus, from whom they came into the hands of ignorant men, who either kept them without care or estimation of their value, or else the heirs of Neleus, in order to save them from the Kings of Pergamus, who were very anxious to collect a library, hid them in a cellar, where they lay forgotten for a hundred and thirty years, and thus got into bad condition. Finally, the descendants of Theophrastus found them again after long search, and sold them to Apellicon of Teos, who restored what had been destroyed by worms and mould, but who did not possess the learning or the capacity so to do. Hence others went over them, filled up the blanks as they thought best, replaced what was damaged, and thus they were sufficiently altered. But still it was not enough.
Just after Apellicon’s death, the Roman Sulla conquered Athens, and amongst the spoil carried off to Rome were the works of Aristotle. The Romans, who had just begun to become acquainted with Greek science and art, but who did not yet appreciate Greek philosophy, did not know how to profit from this spoil. A Greek, named Tyrannion, later on obtained permission to make use of and publish the manuscripts of Aristotle, and he prepared an edition of them, which, however, also bears the reproach of being inaccurate, for here they had the fate of being given by the dealers into the hands of ignorant copyists, who introduced a number of additional corruptions.[84] This is the way in which the Aristotelian philosophy has come to us. Aristotle certainly made known much to his contemporaries, that is to say, the writings in the Alexandrian library, but even those works do not seem to have been widely known. In fact, many of them are most corrupt, imperfect, and, as, for example, the Poetics, incomplete. Several of them, such as the Metaphysical treatises, seem to be patched up from different writings, so that the higher criticism can give rein to all its ingenuity, and, according to one clever critic, the matter may with much show of probability be decided in one particular way, while another ingenious person has a different explanation to oppose to this.[85] So much remains certain, that the writings of Aristotle are corrupt, and often both in their details and in the main, not consistent; and we often find whole paragraphs almost verbally repeated. Since the evil is so old, no real cure can certainly be looked for; however, the matter is not so bad as would appear from this description. There are many and important works which may be considered to be entire and uninjured, and though there are others corrupt here and there, or not well arranged, yet, as far as the essentials are concerned, no such great harm has been done as might appear. What we possess therefore places us in a sufficiently good position to form a definite idea of the Aristotelian philosophy, both as a whole, and in many of its details.
But there is still an historic distinction to be noted. For there is an old tradition that Aristotle’s teaching was of a twofold nature and that his writings were of two different kinds, viz. esoteric or acroamatic and exoteric—a distinction which was also made by the Pythagoreans (Vol. I. p 202). The esoteric teaching was given within the Lyceum in the morning, the exoteric in the evening; the latter related to practice in the art of rhetoric and in disputation, as also to civic business, but the other to the inward and more profound philosophy, to the contemplation of nature and to dialectic proper.[86] This circumstance is of no importance; we see by ourselves which of his works are really speculative and philosophic, and which are rather empirical in character; but they are not to be regarded as antagonistic in their content, and as if Aristotle intended some for the people and others for his more intimate disciples.
_a._ We have first to remark that the name Aristotelian philosophy is most ambiguous, because what is called Aristotelian philosophy has at different times taken very different forms. It first of all signifies Aristotelian philosophy proper. As regards the other forms of the Aristotelian philosophy, however, it had, in the second place, at the time of Cicero, and specially under the name of Peripatetic philosophy, more of the form of a popular philosophy, in which attention was principally directed to natural history and to morals (Vol. I. p. 479). This period does not appear to have taken any interest in working out and bringing to consciousness the deep and properly speaking speculative side of Aristotelian philosophy, and indeed with Cicero there is no notion of it present. A third form of this philosophy is the highly speculative form of the Alexandrine philosophy, which is also called the Neo-Pythagorean or Neo-Platonic philosophy, but which may just as well be called Neo-Aristotelian—the form as it is regarded and worked up by the Alexandrines, as being identical with the Platonic. An important signification of the expression, in the fourth place, is that which it had in the middle ages where, through insufficient knowledge, the scholastic philosophy was designated Aristotelian. The Scholastics occupied themselves much with it, but the form that the philosophy of Aristotle took with them cannot be held by us to be the true form. All their achievements, and the whole extent of the metaphysics of the understanding and formal logic which we discover in them, do not belong to Aristotle at all. Scholasticism is derived only from traditions of the Aristotelian doctrines. And it was not until the writings of Aristotle became better known in the West, that a fifth Aristotelian philosophy was formed, which was in part opposed to the Scholastic—it arose on the decline of scholasticism and with the revival of the sciences. For it was only after the Reformation that men went back to the fountainhead, to Aristotle himself. The sixth signification which Aristotelian philosophy bears, is found in false modern ideas and conceptions, such as those that we find in Tennemann, who is gifted with too little philosophic understanding to be able to grasp the Aristotelian philosophy (Vol. I. p. 113). Indeed, the general opinion of Aristotelian philosophy now held is that it made what is called experience the principle of knowledge.
_b._ However false this point of view on the one hand is, the occasion for it may be found in the Aristotelian manner. Some particular passages to which in this reference great importance has been given, and which have been almost the only passages understood, are made use of to prove this idea. Hence we have now to speak of the character of the Aristotelian manner. Since in Aristotle, as we already said (p. 118), we need not seek a system of philosophy the particular parts of which have been deduced, but since he seems to take an external point of departure and to advance empirically, his manner is often that of ordinary ratiocination. But because in so doing Aristotle has a quality, altogether his own, of being throughout intensely speculative in his manner, it is further signified that in the first place he has comprehended the phenomenal as a thinking observer. He has the world of appearance before himself complete and in entirety, and sets nothing aside, however common it may appear. All sides of knowledge have entered into his mind, all have interest for him, and he has thoroughly dealt with all. In the empirical details of a phenomenon abstraction may easily be lost sight of, and its application may be difficult: our progress may be one-sided, and we may not be able to reach the root of the matter at all. But Aristotle, because he looks at all sides of the universe, takes up all those units as a speculative philosopher, and so works upon them that the profoundest speculative Notion proceeds therefrom. We saw, moreover, thought first proceeding from the sensuous, and, in Sophistry, still exercising itself immediately in the phenomenal. In perception, in ordinary conception, the categories appear: the absolute essence, the speculative view of these elements, is always expressed in expressing perceptions. This pure essence in perception Aristotle takes up. When, in the second place, he begins conversely with the universal or the simple, and passes to its determination, this looks as if he were enumerating the number of significations in which it appears; and, after dealing with them all, he again passes all their forms in review, even the quite ordinary and sensuous. He thus speaks of the many significations that we find, for example, is the words οὐσία, ἀρχή, αἰτία, ὁμοῦ, &c. It is in some measure wearisome to follow him in this mere enumeration, which proceeds without any necessity being present, and in which the significations, of which a list is given, manifest themselves as comprehended only in their essence, or in that which is common to all, and not in their determinations; and thus the comprehension is only external. But, on the one hand, this mode presents a complete series of the moments, and on the other, it arouses personal investigation for the discovery of necessity. In the third place, Aristotle takes up the different thoughts which earlier philosophers have had, contradicts them—often empirically—justifies them, reasoning in all sorts of ways, and then attains to the truly speculative point of view. And finally, in the fourth place, Aristotle passes on thoughtfully to consider the object itself of which he treats, _e.g._ the soul, feeling, recollection, thought, motion, time, place, warmth, cold, &c. Because he takes all the moments that are contained within the conception to be, so to speak, united, he does not omit determinations; he does not hold now to one determination and then to another, but takes them as all in one; while reflection of the understanding, which has identity as the rule by which it goes, can only preserve harmony with this by always, while in one determination, forgetting and withholding the other. But Aristotle has the patience to go through all conceptions and questions, and from the investigation of the individual determinations, we have the fixed, and once more restored determination of every object. Aristotle thus forms the Notion, and is in the highest degree really philosophic, while he appears to be only empiric. For Aristotle’s empiricism is a totality because he always leads it back again immediately to speculation; he may thus be said to be a perfect empiricist, yet at the same time a thinking one. If, for example, we take away from space all its empirical determinations, the result will be in the highest degree speculative, for the empirical, comprehended in its synthesis, is the speculative Notion.
In this gathering up of determinations into one Notion, Aristotle is great and masterly, as he also is in regard to the simplicity of his method of progression, and in the giving of his decisions in few words. This is a method of treating of Philosophy which has great efficacy, and which in our time has likewise been applied, _e.g._ by the French. It deserves to come into larger use, for it is a good thing to lead the determinations of the ordinary conception from an object to thought, and then to unite them in a unity, in the Notion. But undoubtedly this method in one respect appears to be empirical, and that, indeed, in the acceptation of objects as we know them in our consciousness; for if no necessity is present, this still more appears merely to pertain to manner externally regarded. And yet it cannot be denied that with Aristotle the object was not to bring everything to a unity, or to reduce determinations to a unity of opposites, but, on the contrary, to retain each in its determination and thus to follow it up. That may, on the one hand, be a superficial method, _e.g._ when everything is brought to an empty determinateness, such as those of irritability and sensibility, sthenic and asthenic, but, on the other, it is likewise necessary to grasp reality in simple determinateness, though without making the latter in this superficial way the starting point. Aristotle, on the other hand, simply forsakes determination in another sphere where it no longer has this form; but he shows what it is like here, or what change has taken place within it, and thus it comes to pass that he often treats one determination after the other without showing their connection. However, in his genuine speculation Aristotle is as profound as Plato, and at the same time more developed and explicit, for with him the opposites receive a higher determination. Certainly we miss in him the beauty of Plato’s form, the melodious speech, or, as we might almost call it, chatting—the conversational tone adopted, which is as lively as it is cultured and human. But where in Plato we find, as we do in his Timæus, the speculative Idea definitely expressed in the thesis form, we see in it a lack both of comprehension and purity; the pure element escapes it, while Aristotle’s form of expression is marked both by purity and intelligibility. We learn to know the object in its determination and its determinate Notion; but Aristotle presses further into the speculative nature of the object, though in such a way that the latter remains in its concrete determination, and Aristotle seldom leads it back to abstract thought-determinations. The study of Aristotle is hence inexhaustible, but to give an account of him is difficult, because his teaching must be reduced to universal principles. Thus in order to set forth Aristotelian philosophy, the particular content of each thing would have to be specified. But if we would be serious with Philosophy, nothing would be more desirable than to lecture upon Aristotle, for he is of all the ancients the most deserving of study.
_c._ What ought to come next is the determination of the Aristotelian Idea, and here we have to say, in quite a general way, that Aristotle commences with Philosophy generally, and says, in the first place, regarding the value of Philosophy (in the second chapter of the first book of the Metaphysics), that the object of Philosophy is what is most knowable, viz. the first and original causes, that is, the rational. For through these and from these all else is known, but principles do not become known through the facts which form their groundwork (ὑποκείμενα). In this we already have the opposite to the ordinary point of view. Aristotle has further declared the chief subject of investigation, or the most essential knowledge (ἐπιστήμη ἀρχικωτάτη) to be the knowledge of end; but this is the good in each thing and, generally speaking, the best in the whole of nature. This also holds good with Plato and Socrates; yet the end is the true, the concrete, as against the abstract Platonic Idea. Aristotle then says of the value of Philosophy, “Men have begun to philosophize through wonder,” for in it the knowledge of something higher is at least anticipated. “Thus since man, to escape from ignorance, began to philosophize, it is clear that for the sake of knowledge he followed after knowledge, and not for any utility which it might possess for him. This is also made evident by the whole course of its external history. For it was after men had done with all their absolute requirements, and with what concerns their comfort, that they first began to seek this philosophic knowledge. We hence seek it not for the sake of any outside utility that it may have. And thus as we say that a free man is he who exists on his own account and not for another, Philosophy is the only science that is free, because it alone exists for itself—it is knowledge on account of knowledge. Therefore in justice it will not be held to be a human possession,” in the sense that, as we said above, (p. 11) it is not in the possession of a man. “For in many ways the nature of man is dependent, so that, according to Simonides, God alone possesses the prerogative (γέρας), and yet it is unworthy on man’s part not to seek after the science that is in conformity with his own condition (τὴν καθ̓ αὑτὸν ἐπιστήνην). But if the poets were right, and envy characterized divinity, all who would aim higher must be unfortunate;” Nemesis punishes whatever raises itself above the commonplace, and makes everything again equal. “But the divine cannot be jealous,” _i.e._ cannot refuse to impart that which it is, as if this knowledge should not come to man (_supra_, pp. 72, 73) “and—according to the proverb—the poets utter many falsehoods. Nor ought we to consider that any science is more entitled to honour than the one we now investigate, for that which is most divine, is also most worthy of honour.” That is to say, what has and imparts what is best is honoured: the gods are thus to be honoured because they have this knowledge. “God is held to be the cause and principle of everything, and therefore God has this science alone, or for the most part.” But for this reason it is not unworthy of man to endeavour to seek the highest good which is in conformity with him, this knowledge pertaining to God. “All other sciences are, however, more requisite than Philosophy, but none more excellent.”
It is difficult to give a more detailed account of the Aristotelian philosophy, the universal Idea with the more important elements, for Aristotle is much more difficult to comprehend than Plato. In the latter there are myths, and we can pass over the dialectic and yet say that we have read Plato; but with Aristotle we enter at once upon what is speculative. Aristotle always seems to have philosophized only respecting the individual and particular, and not to have risen from it to the thought of the absolute and universal, to the thought of God; he always goes from the individual to the individual. His task concerns what is, and is just as clearly divided off as a professor has his work divided into a half year’s course; and though in this course he examines the whole of the world of conception, he yet appears only to have recognized the truth in the particular, or only a succession of particular truths. This has nothing dazzling about it, for he does not appear to have risen to the Idea (as Plato speaks of the nobility of Idea), nor to have led back to it the individual. But if Aristotle on the one hand did not logically abstract the universal Idea, (for then his so-called logic, which is something very different, would have had as its principle the recognition of one Notion in all) on the other hand there appears in Aristotle the one Absolute, the idea of God, as itself a particular, in its place beside the others, although it is all Truth. It is as if we said, “there are plants, animals, men, and also God, the most excellent of all.”
From the whole list of conceptions which Aristotle enumerates, we shall now select some for further examination, and I will first speak of his metaphysics and its determinations. Then I will deal with the particular sciences which have been treated by Aristotle, beginning by giving the fundamental conception of nature as it is constituted with Aristotle; in the third place I will say something of mind, of the soul and its conditions, and finally the logical books of Aristotle will follow.
1. THE METAPHYSICS.
Aristotle’s speculative Idea is chiefly to be gathered from his Metaphysics, especially from the last chapters of the twelfth book (Λ) which deal with the divine Thought. But this treatise has the peculiar drawback noticed above (p. 128) of being a compilation, several treatises having been combined into one. Aristotle and the ancients did not know this work by the name of the Metaphysics; it was by them called πρώτη φιλοσοφία.[87] The main portion of this treatise has a certain appearance of unity given to it by the connection of the argument,[88] but it cannot be said that the style is orderly and lucid. This pure philosophy Aristotle very clearly distinguishes (Metaph. IV. 1) from the other sciences as “the science of that which is, in so far as it is, and of what belongs to it implicitly and explicitly.” The main object which Aristotle has in view (Metaph. VII. 1) is the definition of what this substance (οὐσία) really is. In this ontology or, as we call it, logic, he investigates and minutely distinguishes four principles (Metaph. I. 3): first, determination or quality as such, the wherefore of anything, essence or form; secondly, the matter; thirdly, the principle of motion; and fourthly, the principle of final cause, or of the good. In the later part of the Metaphysics Aristotle returns repeatedly to the determination of the Ideas, but here also a want of connection of thought appears, even though all is subsequently united into an entirely speculative Notion.
To proceed, there are two leading forms, which Aristotle characterizes as that of potentiality (δύναμις) and that of actuality (ἐνέργεια); the latter is still more closely characterized as entelechy (ἐντελεχεια) or free activity, which has the end (τὸ τέλος) in itself, and is the realization of this end. These are determinations which occur repeatedly in Aristotle, especially in the ninth book of the Metaphysics, and which we must be familiar with, if we would understand him. The expression δύναμις is with Aristotle the beginning, the implicit, the objective; also the abstract universal in general, the Idea, the matter, which can take on all forms, without being itself the form-giving principle. But with an empty abstraction such as the thing-in-itself Aristotle has nothing to do. It is first in energy or, more concretely, in subjectivity, that he finds the actualizing form, the self-relating negativity. When, on the other hand, we speak of Being, activity is not yet posited: Being is only implicit, only potentiality, without infinite form. To Aristotle the main fact about Substance is that it is not matter merely (Metaph. VII. 3); although in ordinary life this is what is generally taken to be the substantial. All that is contains matter, it is true, all change demands a substratum (ὑποκείμενον) to be affected by it; but because matter itself is only potentiality, and not actuality—which belongs to form—matter cannot truly exist without the activity of form (Metaph.
VIII. 1, 2). With Aristotle δύναμις does not therefore mean force (for force is really an imperfect aspect of form), but rather capacity which is not even undetermined possibility; ἐνέργεια is, on the other hand, pure, spontaneous activity. These definitions were of importance throughout all the middle ages. Thus, according to Aristotle, the essentially absolute substance has potentiality and actuality, form and matter, not separated from one another; for the true objective has most certainly also activity in itself, just as the true subjective has also potentiality.
From this definition we now see clearly the sort of opposition in which the Idea of Aristotle stands to that of Plato, for although the Idea of Plato is in itself essentially concrete and determined, Aristotle goes further. In so far, namely, as the Idea is determined in itself, the relation of the moments in it can be more closely specified, and this relation of the moments to each other is to be conceived of as nothing other than activity. It is easy for us to have a consciousness of what is deficient in the universal, that is, of that which is implicit only. The universal, in that it is the universal, has as yet no reality, for because implicitude is inert, the activity of realization is not yet posited therein. Reason, laws, etc., are in this way abstract, but the rational, as realizing itself, we recognize to be necessary, and therefore we take such universal laws but little into account. Now the standpoint of Plato is in the universal; what he does is to express Being rather as the objective, the Good, the end, the universal. To this, however, the principle of living subjectivity, as the moment of reality, seems to be lacking, or it appears at least to be put in the background. This negative principle seems indeed not to be directly expressed in Plato, but it is essentially contained in his definition of the Absolute as the unity of opposites; for this unity is essentially a negative unity of those opposites, which abrogates their being-another, their opposition, and leads them back into itself. But with Aristotle this negativity, this active efficacy, is expressly characterized as energy; in that it breaks up itself—this independence—abrogating unity, and positing separation; for, as Aristotle says (Metaph. VII. 13), “actuality separates.” The Platonic Idea, on the other hand, is rather that abrogation of opposites, where one of the opposites is itself unity. While, therefore, with Plato the main consideration is the affirmative principle, the Idea as only abstractly identical with itself, in Aristotle there is added and made conspicuous the moment of negativity, not as change, nor yet as nullity, but as difference or determination. The principle of individualization, not in the sense of a casual and merely particular subjectivity, but in that of pure subjectivity, is peculiar to Aristotle. Aristotle thus also makes the Good, as the universal end, the substantial foundation, and maintains this position against Heraclitus and the Eleatics. The Becoming of Heraclitus is a true and real determination, but change yet lacks the determination of identity with itself, the constancy of the universal.
The stream is ever changing, yet it is nevertheless ever the same, and is really a universal existence. From this it is at once evident that Aristotle (Metaph. IV. 3-6) is controverting the opinions of Heraclitus and others when he says that Being and non-being are not the same (Vol. I. p. 282), and in connection with this lays down the celebrated maxim of contradiction, that a man is not at the same time a ship. This shows at once that Aristotle does not understand by this pure Being and non-being, this abstraction which is really only the transition of the one into the other; but by that which is, he understands Substance, the Idea, Reason, viewed likewise as an impelling end. As he maintains the universal against the principle of mere change, he puts forward activity in opposition to the numbers of the Pythagoreans, and to the Platonic Ideas. However frequently and fully Aristotle controverts both of these, all his objections turn on the remark already quoted (Vol. I. p. 213) that activity is not to be found in these principles, and that to say that real things participate in Ideas is empty talk, and a poetic metaphor. He says also that Ideas, as abstract universal determinations, are only as far as numbers go equal to things, but are not on that account to be pointed out as their causes. Moreover, he maintains that there are contradictions involved in taking independent species, since in Socrates, for instance, there are several ideas included: man, biped, animal (Metaph. I. 7 and 9). Activity with Aristotle is undoubtedly also change, but change that is within the universal, and that remains self-identical; consequently a determination which is self-determination, and therefore the self-realizing universal end: in mere alteration, on the contrary, there is not yet involved the preservation of identity in change. This is the chief point which Aristotle deals with.
Aristotle distinguishes various moments in substance, in so far as the moments of activity and potentiality do not appear as one, but still in separation. The closer determination of this relation of energy to potentiality, of form to matter, and the movement of this opposition, gives the different modes of substance. Here Aristotle enumerates the substances; and to him they appear as a series of different kinds of substance, which he merely takes into consideration one by one, without bringing them together into a system. The three following are the chief among these:—