(1.) The absolutely first and absolutely unconditioned fundamental principle ought to express that act of the mind which lies at the basis of all consciousness, and alone makes consciousness possible. Such is the principle of identity, A = A. This principle remains, and cannot be thought away, though every empirical determination be removed. It is a fact of consciousness, and must, therefore, be universally admitted: but at the same time it is by no means conditioned, like every other empirical fact, but unconditioned, because it is a free act. By affirming that this principle is certain without any farther ground, we ascribe to ourselves the faculty of positing something absolutely. We do not, therefore, affirm that A is, but only that if A is, then it is equal to A. It is no matter now about the content of the principle, we need only regard its form. The principle A = A is, therefore, conditioned (hypothetically) as to its content, and unconditioned only as to its form and its connection. If we would now have a principle unconditioned in its content as well as in its connection, we put Ego in the place of A, as we are fully entitled to do, since the connection of subject and predicate contained in the judgment A = A is posited in the Ego and through the Ego. Hence A = A becomes transformed into Ego = Ego. This principle is unconditioned not only as to its connection, but also as to its content. While we could not, instead of A = A, say that A is, yet we can instead of Ego = Ego, say that Ego is. All the facts of the empirical consciousness find their ground of explanation in this, viz., that before any thing else is posited in the Ego, the Ego itself is there. This fact, that the Ego is absolutely posited and grounded on itself, is the basis of all acting in the human mind, and shows the pure character of activity in itself. The Ego is, because it posits itself, and it only is, because this simple positing of itself is wholly by itself. The being of the Ego is thus seen in the positing of the Ego, and on the other hand, the Ego is enabled to posit simply by virtue of its being. It is at the same time the acting, and the product of the action. I am, is the expression of the only possible deed. Logically considered we have, in the first principle of a Theory of Science, A = A, the logical law of identity. From the proposition A = A, we arrive at the proposition Ego = Ego. The latter proposition, however, does not derive its validity from the former, but contrarywise. The prius of all judgments is the Ego, which posits the connection of subject and predicate. The logical law of identity arises, therefore, from Ego = Ego. Metaphysically considered, we have in this same first principle of a Theory of Science, the category of reality. We obtain this category by abstracting every thing from the content, and reflecting simply upon the mode of acting of the human mind. From the Ego, as the absolute subject, every category is derived.
(2.) The second fundamental principle, conditioned in its content, and only unconditioned in its form, which is just as incapable as the first of demonstration or derivation, is also a fact of the empirical consciousness: it is the proposition non-A is not = A. This sentence is unconditioned in its form, because it is free act like the first, from which it cannot be derived; but in its content, as to its matter it is conditioned, because if a non-A is posited, there must have previously been posited an A. Let us examine this principle more closely. In the first principle, A = A, the form of the act was a positing, while in this second principle it is an oppositing. There is an absolute opposition, and this opposition, in its simple form, is an act absolutely possible, standing under no condition, limited by no higher ground. But as to its matter, the opposition presupposes a position; the non-A cannot be posited without the A. What non-A is, I do not through that yet know: I only know concerning non-A that it is the opposite of A: hence I only know what non-A is under the condition that I know A. But now A is posited through the Ego; there is originally nothing posited but the Ego, and nothing but this absolutely posited. Hence there can be an absolute opposition only to the Ego. That which is opposed to the Ego is the non-Ego. A non-Ego is absolutely opposed to the Ego, and this is the second fact of the empirical consciousness. In every thing ascribed to the Ego, the contrary, by virtue of this simple opposition, must be ascribed to the non Ego.—As we obtained from the first principle Ego = Ego, the logical law of identity, so now we have, from the second sentence Ego is not = non-Ego, the logical law of contradiction. And metaphysically,—since we wholly abstract the definite act of judgment, and, simply in the form of sequence, conclude not-being from opposite being,—we possess from this second principle the category of negation.
(3.) The third principle, conditioned in its form, is almost capable of proof, since it is determined by two others. At every step we approach the province where every thing can be proved. This third principle is conditioned in its form, and unconditioned only in its content: i. e. the problem, but not the solution of the act to be established through it, has been given through the two preceding principles. The solution is afforded unconditionally and absolutely by a decisive word of the reason. The problem to be solved by this third principle is this, viz., to adjust the contradiction contained in the two former ones. On the one side, the Ego is wholly suppressed by the non-Ego: there can be no positing of the Ego so far as the non-Ego is posited. On the other side, the non-Ego is only an Ego posited in the consciousness, and hence the Ego is not suppressed by the non-Ego. The Ego appearing on the one side to be suppressed, is not really suppressed. Such a result would be non-A = A. In order to remove this contradiction, which threatens to destroy the identity of our consciousness, and the only absolute foundation of our knowledge, we must find in x that which will justify both of the first two principles, and leave the identity of our consciousness undisturbed. The two opposites, the Ego and the non-Ego, should be united in the consciousness, should be alike posited without either excluding the other; they should be received in the identity of the proper consciousness. How shall being and not-being, reality and negation, be conceived together without destroying each other? They will reciprocally limit each other. Hence the unknown quantity x, whose terms we are seeking, stands for these limits: limitation is the sought-for act of the Ego, and as category in the thought, we have thus the category of determination or limitation. But in limitation, there is also given the category of quantity, for when we say that any thing is limited, we mean that its reality is through negation, not wholly, but only partially suppressed. Thus the conception of limit contains also the conception of divisibility, besides the conceptions of reality and negation. Through the act of limitation, the Ego as well as the non-Ego, is posited as divisible. Still farther, we see how a logical law follows from the third fundamental principle as well as from the first two. If we abstract the definite content, the Ego and the non-Ego, and leave remaining the simple form of the union of opposites through the conception of divisibility, we have then the logical principle of the ground, or foundation, which may be expressed in the formula: A in part = non-A, non-A in part = A. Wherever two opposites are alike in one characteristic, we consider the ground as a ground of relation, and wherever two similar things are opposite in one characteristic, we consider the ground as a ground of distinction.—With these three principles we have now exhausted the measure of that which is unconditioned and absolutely certain. We can embrace the three in the following formula:
I posit in the Ego a divisible non Ego over against the divisible Ego. No philosophy can go beyond this cognition, and every fundamental philosophy should go back to this. Just so far as it does this, it becomes science (Wissenschaftslehre). Every thing which can appear in a system of knowledge, as well as a farther division of the Theory of Science itself, must be derived from this. The proposition that the Ego and the non-Ego reciprocally limit each other, may be divided into the following two: (1) the Ego posits itself as limited through the non-Ego (i. e. the Ego is in a cognitive (or passive) relation); (2) the Ego posits the non-Ego as limited through the Ego (i. e. the Ego is in an active relation). The former proposition is the basis of the theoretical, and the latter of the practical part of the Theory of Science. The latter part cannot, at the outset, be brought upon the stage; for the non-Ego, which should be limited by the acting Ego, does not at the outset exist, and we must wait and see whether it will find, in the theoretical part, a reality.
The groundwork of theoretical knowledge advances through an uninterrupted series of antitheses and syntheses. The fundamental synthesis of the theoretical Theory of Science is the proposition: the Ego posits itself as determined (limited) by the non-Ego. If we analyze this sentence, we find in it two subordinate sentences which are reciprocally opposite. (1) The non-Ego as active determines the Ego, which thus far is passive; but since all activity must start from the Ego, so (2) the Ego determines itself through an absolute activity. Herein is a contradiction, that the Ego should be at the same time active and passive. Since this contradiction would destroy the above proposition, and also suppress the unity of consciousness, we are forced to seek some point, some new synthesis, in which these given antitheses may be united. This synthesis is attained when we find that the conceptions of action and passion, which are contained under the categories of reality and negation, find their compensation and due adjustment in the conception of divisibility. The propositions: “the Ego determines,” and “the Ego is determined,” are reconciled in the proposition: “the Ego determines itself in part, and is determined in part.” Both, however, should be considered as one and the same. Hence more accurately: as many parts of reality as the Ego posits in itself, so many parts of negation does it posit in the non-Ego; and as many parts of reality as the Ego posits in the non-Ego, so many parts of negation does it posit in itself. This determination is reciprocal determination, or reciprocal action. Thus Fichte deduces the last of the three categories under Kant’s general category of relation. In a similar way (viz., by finding a synthesis for apparent contradictions), he deduces the two other categories of this class, viz., that of cause, and that of substance. The process is thus: So far as the Ego is determined, and therefore passive, has the non-Ego reality. The category of reciprocal determination, to which we may ascribe indifferently either of the two sides, reality or negation, may, more strictly taken, imply that the Ego is passive, and the non-Ego active. The notion which expresses this relation is that of causality. That, to which activity is ascribed, is called cause (primal reality), and that to which passiveness is ascribed, is called effect; both, conceived in connection, may be termed a working. On the other side, the Ego determines itself. Herein is a contradiction; (1) the Ego determines itself; it is therefore that which determines, and is thus active; (2) it determines itself; it is therefore that which becomes determined, and is thus passive. Thus in one respect and in one action both reality and negation are ascribed to it. To resolve this contradiction, we must find a mode of action which is activity and passiveness in one; the Ego must determine its passiveness through activity, and its activity through passiveness. This solution is attained by aid of the conception of quantity. In the Ego all reality is first of all posited as absolute quantum, as absolute totality, and thus far the Ego may be compared to a greatest circle which contains all the rest. A definite quantum of activity, or a limited sphere within this greatest circle of activity, is indeed a reality; but when compared with the totality of activity, is it also a negation of the totality or passiveness. Here we have found the mediation sought for; it lies in the notion of substance. In so far as the Ego is considered as the whole circle, embracing the totality of all realities, is it substance; but so far as it becomes posited in a determinate sphere of this circle, is it accidental. No accidence is conceivable without substance; for, in order to know that any thing is a definite reality, it must first be referred to reality in general, or to substance. In every change we think of substance in the universal; accidence is something specific (determinate), which changes with every changing cause. There is originally but one substance, the Ego; in this one substance all possible accidents, and therefore all possible realities, are posited. The Ego alone is the absolutely infinite. The Ego, as thinking and as acting, indicates a limitation. The Fichtian theory is accordingly Spinozism, only (as Jacobi strikingly called it) a reversed and idealistic Spinozism.
Let us look back a moment. The objectivity which Kant had allowed to exist Fichte has destroyed. There is only the Ego. But the Ego presupposes a non-Ego, and therefore a kind of object. How the Ego comes to posit such an object, must the theoretical Theory of Science now proceed to show.
There are two extreme views respecting the relation of the Ego to the non-Ego, according as we start from the conception of cause, or that of substance. (1) Starting from the conception of cause, we have posited through the passiveness of the Ego an activity of the non-Ego. This passiveness of the Ego must have some ground. This cannot lie in the Ego, which in itself posits only activity. Consequently it lies in the non-Ego. Here the distinction between action and passion is apprehended, not simply as quantitative (i. e., viewing the passiveness as a diminished activity), but the passion is in quality opposed to the action; a presupposed activity of the non-Ego is, therefore, a real ground of the passiveness in the Ego. (2) Starting from the conception of substance, we have posited a passiveness of the Ego through its own activity. Here the passiveness in respect of quality is the same as activity, it being only a diminished activity. While, therefore, according to the first view, the passive Ego has a ground distinct in quality from the Ego, and thus a real ground, yet here its ground is only a diminished activity of the Ego, distinct only in quantity from the Ego, and is thus an ideal ground. The former view is dogmatic realism, the latter is dogmatic idealism. The latter affirms: all reality of the non-Ego is only a reality given it from the Ego; the former declares: nothing can be given, unless there be something to receive, unless an independent reality of the non-Ego, as thing in itself, be presupposed. Both views present thus a contradiction, which can only be removed by a new synthesis. Fichte attempted this synthesis of idealism and realism, by bringing out a mediating system of critical idealism. For this purpose he sought to show that the ideal ground and the real ground are one and the same. Neither is the simple activity of the Ego a ground for the reality of the non-Ego, nor is the simple activity of the non-Ego a ground for the passiveness in the Ego. Both must be conceived together in this way, viz., the activity of the Ego meets a hindrance, which is set up against it, not without some assistance of the Ego, and which circumscribes and reflects in itself this activity of the Ego. The hindrance is found when the subjective can be no farther extended, and the expanding activity of the Ego is driven back into itself, producing as its result self-limitation. What we call objects are nothing other than the different impinging of the activity of the Ego on some inconceivable hindrance, and these determinations of the Ego, we carry over to something external to ourselves, and represent them to ourselves as space filling matter. That which Fichte calls a hindrance through the non-Ego, is thus in fact the same as Kant calls thing essentially, the only difference being that with Fichte it is made subjective. From this point Fichte then deduces the subjective activities of the Ego, which mediate, or seek to mediate, theoretically, the Ego with the non-Ego—as imagination, representation (sensation, intuition, feeling), understanding, faculty of judgment, reason; and in connection with this he brought out the subjective projections of the intuition, space, and time.
We have now reached the third part of the Theory of Science, via., the foundation of the practical. We have seen that the Ego represents. But that it may represent does not depend upon the Ego alone, but is determined by something external to it. We could in no way conceive of a representation, except through the presupposition that the Ego finds some hindrance to its undetermined and unlimited activity. Accordingly the Ego, as intelligence, is universally dependent upon an indefinite, and hitherto wholly indefinable non-Ego, and only through and by means of such non-Ego, is it intelligence. A finite being is only finite as intelligence. These limits, however, we shall break through. The practical law which unites the finite Ego with the infinite, can depend upon nothing external to ourselves. The Ego, according to all its determinations, should be posited absolutely through itself, and hence should be wholly independent of every possible non-Ego. Consequently, the absolute Ego and the intelligent Ego, both of which should constitute but one, are opposed to each other. This contradiction is obviated, when we see that because the absolute Ego is capable of no passiveness, but is absolute activity, therefore the Ego determines, through itself, that hitherto unknown non-Ego, to which the hindrance has been ascribed. The limits which the Ego, as theoretic, has set over against itself in the non-Ego, it must, as practical, seek to destroy, and absorb again the non-Ego in itself (or conceive it as the self-limitation of the Ego). The Kantian primacy of the practical reason is here made a truth. The transition of the theoretical part into the practical, the necessity of advancing from the one to the other, Fichte represents more closely thus:—The theoretical Theory of Science had to do with the mediation of the Ego, and the non-Ego. For this end it introduced one connecting link after another, without ever attaining its end. Then enters the reason with the absolute and decisive word: “there ought to be no non-Ego, since the non-Ego can in no way be united with the Ego;” and with this the knot is cut, though not untied. Thus it is the incongruity between the absolute (practical) Ego, and the finite (intelligent) Ego, which is carried over beyond the theoretical province into the practical. True, this incongruity does not wholly disappear, even in the practical province, where the act is only an infinite striving to surpass the limits of the non-Ego. The Ego, so far as it is practical, has, indeed, the tendency to pass beyond the actual world, and establish an ideal world, as it would be were every reality posited by the absolute Ego; but this striving is always confined to the finite partly through itself, because it goes out towards objects, and objects are finite, and partly through the resistance of the sensible world. We ought to seek to reach the infinite, but we cannot do it; this striving and inability is the impress of our destiny for eternity.
Thus—and in these words Fichte brings together the result of the Theory of Science—the whole being of finite rational natures is comprehended and exhausted: an original idea of our absolute being; an effort to reflect upon ourselves, in order to gain this idea; a limitation, not of this striving, but of our own existence, which first becomes actual through this limitation, or through an opposite principle, a non-Ego, or our finiteness; a self-consciousness, and especially a consciousness of our practical strivings; a determination accordingly of our representations, and through these of our actions; a constant widening of our limits into the infinite.
2. Fichte’s Practical Philosophy.—The principles which Fichte had developed in his Theory of Science he applied to practical life, especially to the theory of rights and morals. He sought to deduce here every thing with methodical rigidness, without admitting any thing which could not be proved from experience. Thus, in the theory of rights and of morals, he will not presuppose a plurality of persons, but first deduces this: even that the man has a body is first demonstrated, though, to be sure, not stringently.