2. Logic

In the second place, as to the intellectual side of the philosophy, we must first of all. consider the principle of the Stoics in answering the question of what the true and rational is. In regard to the source of our knowledge of truth, or of the criterion, which in those times used to be discussed (Vol. I. p. 474, Vol. II. p. 233), the Stoics decided that the scientific principle is the conception that is laid hold of (φαντασία καταληπτική), for the true as well as for the good; for the true and good are set forth as content or as the existent. Thus a unity of apprehending thought and Being is set forth in which neither can exist without the other; by this is meant not sensuous conception as such, but that which has returned into thought and become proper to consciousness. Some of the older Stoics, amongst whom we certainly find Zeno, called this criterion the very truth of reason (ὀρθὸς λόγος). Ordinary conception on its own account (φαντασία) is an impression (τύπωσις), and for it Chrysippus used the expression alteration (ἐτεροίωσις). But that the conception should be true, it must be comprehended; it begins with feeling, whereby in fact the type of another is brought into us; the second step is that we should transform this into part of ourselves, and this first of all occurs through thought.

According to Cicero’s account (Academ. Quæst. IV. 47), Zeno illustrated the moments of this appropriation by a movement of the hand. When he showed the open palm he said that this was a sensuous perception; when he bent the fingers somewhat, this was a mental assent through which the conception is declared to be mine; when he pressed them quite together and formed a fist, this was comprehension (κατάληψις), just as in German we speak of comprehension [Begreifen] when by means of our senses we lay hold of anything in a similar way; when he then brought the left hand into play and pressed together that fist firmly and forcibly, he said that this was science, in which no one but the wise man participated. This double pressure, my pressing with the other hand that which is grasped, is said to signify conviction, my being conscious of the identity of thought with the content. “But who this wise man is or has been the Stoics never say,” adds Cicero; and of this we shall afterwards have to speak in greater detail. In fact, the matter is not made clear through this gesticulation of Zeno’s. The first action, the open hand, is sensuous apprehension, immediate seeing, hearing, &c.; the first motion of the hand is then, speaking generally, spontaneity in grasping. This first assent is likewise given by fools; it is weak, and may be false. The next moment is the closing of the hand, comprehension, taking something in; this makes the ordinary conception truth, because the ordinary conception becomes identical with thought. By this my identity with this determination is indeed set forth, but this is not yet scientific knowledge, for science is a firm, secure, unchangeable comprehension through reason or thought, which is that which rules or directs the soul. Midway between scientific knowledge and folly is the true Notion as the criterion, although as yet it is not itself science; in it thought gives its approbation to existence and recognizes itself, for approbation is the harmony of a thing with itself. But in scientific knowledge a perception of the first elements and determinate knowledge through thought of the object is contained. Thus the ordinary conception as apprehended is thought; scientific knowledge is the consciousness of thought, the knowledge of that harmony.

We may also give our assent to these conclusions of the Stoics with their various stages, since in them there is a perception which is undoubtedly true. In this we have an expression of the celebrated definition of the truth, by which it is made the harmony of object and consciousness; but at the same time it is well to remark that this is to be understood simply, and not as indicating that consciousness had a conception, and that on the other side stood an object, which two had to harmonize with one another, and hence that a third was necessarily brought into existence which had to compare them. Now this would be consciousness itself, but what this last can compare is nothing more than its conception, and—not the object, but—its conception again. Consciousness thus really accepts the conception of the object; it is by this approbation that the conception actually receives truth—the testimony of mind to the objective rationality of the world. It is not, as is ordinarily represented, that a round object here impresses itself upon wax, that a third compares the form of the round and of the wax and, finding them to be similar, judges that the impress must have been correct, and the conception and the thing have harmonized. For the action of thought consists in this, that thought in and for itself gives its approbation and recognizes the object as being in conformity with itself; this it is in which lies the power of truth—or approbation is the expression of this harmony, or judgment itself. In this, say the Stoics, the truth is contained; it is an object which is likewise thought, so that the thought that gives its assent is the ruling thought which posits the harmony of subject with content. The fact that anything is or has truth is thus not because it is (for this moment of Being is only ordinary conception), but the fact that it is, has its power in the approbation of consciousness. But this thought alone and for itself is not the truth, nor is the truth as such contained in it, for the Notion requires the objective element and is only the rational consciousness respecting the truth. But the truth of the object itself is contained in the fact that this objective corresponds to thought, and not the thought to the objective; for this last may be sensuous, changeable, false, and contingent, and thus it is untrue for mind. This is the main point as far as the Stoics are concerned, and even if we discover the Stoic speculative doctrines from their antagonists better than from their originators and advocates, yet from them, too, this idea of unity proceeds; and while both sides of this unity are opposed, both are necessary, but thought is essential reality. Sextus Empiricus (adv. Math. VIII. 10) understands this thus: “The Stoics say that as regards the perceptible and that which is thought some things alone are true; what is felt, however, is not immediate (έξ εὐθείας), for it becomes true for the first time through its relation to the thought that corresponds to it.” Thus neither is immediate thought the true, excepting in so far us it corresponds to the Notion and is known through the working out of rational thought.

This general idea is the only one which is interesting in the Stoics, but even in this very principle, limitations are found to be present. It merely expresses the truth as subsisting in the object, as thought of, yet for that very reason it is still a very formal determination, or not in itself the real Idea. From this point of view Sextus Empiricus (adv. Math. X. 183) examines the Stoics, and he considers and discusses them in all sorts of ways. The most striking thing that he says is what relates to the following. The fact that anything is, rests in its being thought—the fact that it is thought in something being there; the one is the pre-supposition of the other. That is to say, the Stoics assert that a thing exists, not because it is, but through thought; but consciousness for its existence requires another, for thought is likewise one-sided. In this criticism by Sextus it is indicated that thought requires an object as an external to which it gives its approbation. There can be no talk of its being here indicated that the thinking mind in order to exist as consciousness does not require the object; this is really inherent in its conception. But the “this” of the object as an external is only a moment which is not the only one or the essential. It is the manifestation of mind, and mind exists only in that it appears; this therefore must come to pass in it, that it must have its object as external and give its approbation to it—that is, it must withdraw from this relationship into itself and therein recognize its unity. But likewise, having gone into itself, it has now from itself to beget its object and give itself the content which it sends forth from itself. Stoicism is only this return of mind into itself, positing the unity of itself and the object, and recognizing the harmony; but not the going forth again to the extension of the real knowledge of a content from itself. We do not find Stoicism getting any farther, for it stops short at making the consciousness of this unity its object, without developing it in the slightest; thus reason remains the simple form which does not go on to the distinction of the content itself. Hence the formalism of this celebrated standard, and of the standpoint from which all truth of content is judged, rests farther in the fact that the thought of thought, as what is highest, finds this content indeed conformable to itself and appropriates it, since it transforms it into the universal, but its determinations are given. For if thought predominates, still it is always universal form alone. On account of this universality thought yields nothing but the form of identity with itself; the ultimate criterion is thus only the formal identity of the thought which discovers harmony. But it may be asked, with what? For there no absolute self-determination, no content that proceeds from thought as such is to be found; and hence everything may harmonize with my thought. The criterion of the Stoics is consequently only the principle of contradiction; yet when we remove the contradiction from absolute reality, it is indeed self-identical, but for that very reason empty. The harmony must be a higher one; there must be harmony with self in what is other than self, in content, in determination; and thus it must be harmony with harmony.

In accordance with this recognition of the principle of the Stoics, both their logic and their morality is judged; neither the one nor the other arrives at being immanent free science. We have already remarked (p. 241) that they also occupied themselves with logical definitions, and since they made abstract thought the principle, they have brought formal logic to great perfection. Logic is hence to them logic in the sense that it expresses the activity of the understanding as of conscious understanding; it is no longer as with Aristotle, at least in regard to the categories, undecided as to whether the forms of the understanding are not at the same time the realities of things; for the forms of thought are set forth as such for themselves. Then along with this comes in, for the first time, the question respecting the harmony of thought and object or the demand that an appropriate content of thought be shown. However, since all given content may be taken into thought and posited as something thought without therefore losing its determinate character, and this determinate character contradicts and does not support the simplicity of thought, the taking of it up does not help at all; for its opposite may also be taken up and set forth as something thought. The opposition is thereby, however, only in another form; for instead of the content being in outward sensation as something not pertaining to thought and not true, as it formerly was, it now pertains to thought, but is unlike it in its determinateness, seeing that thought is the simple. Thus what was formerly excluded from the simple Notion, now comes into it again; this separation between activity of the understanding and object must indeed be made, but likewise the unity in the object as such has to be shown, if it is only something thought. Hence Scepticism cast up this opposition more especially to the Stoics, and the Stoics amongst themselves had always to improve on their conceptions. As we have just seen (p. 250) in Sextus Empiricus, they did not quite know whether they should define conception as impression or alteration, or in some other way. Now if this conception is admitted into that which directs the soul, into pure consciousness, Sextus further asks (since thought in abstracto is the simple and self-identical which, as incorporeal, is neither passive nor active), How can an alteration, an impression, be made on this? Then the thought-forms are themselves incorporeal. But, according to the Stoics, only the corporeal can make an impression or bring about an alteration. That is to say, on the one hand, because corporeal and incorporeal are unlike they cannot be one; and, on the other, incorporeal thought-forms, as capable of no alteration, are not the content, for this last is the corporeal only.

If the thought-forms could in fact have attained the form of content, they would have been a content of thought in itself. But as they were they had value as laws of thought (λεκτά) merely. The Stoics indeed had a system of immanent determinations of thought, and actually did a great deal in this direction; for Chrysippus specially developed and worked out this logical aspect of things, and is stated to have been a master in it (supra, pp. 240, 241). But this development took a very formal direction; there are the ordinary well-known forms of inference, five of which are given by Chrysippus, while others give sometimes more and sometimes fewer. One of them is the hypothetical syllogism through remotion, “When it is day it is light, but now it is night and hence it is not light.” These logical forms of thought are by the Stoics held to be the unproved that requires no proof; but they are likewise only formal forms which determine no content as such. The wise man is specially skilful in dialectic, we are told by the Stoics, for all things, both physical and ethical, are perceived through a knowledge of logic. But thus they have ascribed this perception to a subject, without stating who this wise man is (p. 250). Since objective grounds by which to determine the truth are wanting, the ultimate decision is attributed to the will of the subject; and this talk about the wise man consequently has its ground in nothing but the indefiniteness of the criterion, from which we cannot get to the determination of content.

It would be superfluous to speak further of their logic any more than of their theory of judgments, which in part coincides with it, and in part is a grammar and a rhetoric; by it no real scientific content can be reached. For this logic is not, like Plato’s dialectic, the speculative science of the absolute Idea; but, as formal logic, as we saw above (p. 254), it is science as the firm, secure, unalterable comprehension of reasons, and stops short at the perception of the same. This logical element, whose essence consists pre-eminently in escaping to the simplicity of the conception to that which is not in opposition to itself nor falls into contradiction, obtains the upper hand. This simplicity, which has not negativity and content in itself, requires a given content which it may not abrogate—but consequently it cannot thus attain to a genuine “other” through itself. The Stoics have constituted their logic often in the most isolated fashion; the principal point that is established here is that the objective corresponds to thought, and they investigated this thought more closely. If in a manner it is quite correct to say that the universal is the true, and that thought has a definite content that must also be concrete, the main difficulty, which is to deduce the particular determination from the universal, so that in this self-determination it may remain identical with itself, has not been solved by the Stoics: and this the Sceptics brought to consciousness. This is the point of view most important in the philosophy of the Stoics; it thus showed itself in their physics also.