Commentary on the Logic, Chapter 9
Actuality as the Unity of Inner and Outer
Actuality is more than mere determinate being (the logic of being) or existence (the logic of appearance). Actuality is that which acts — from to act. A shadow exists, but it is hardly actual. An error exists, but it has no lasting actuality. Actuality is the unity of essence and existence: something is actual when it must necessarily be so, from an inner ground.
Possibility and Necessity
Formal possibility: “Everything is possible that does not contradict itself.” Empty of content. Hegel’s critique: “There is thus no emptier talk than that of such possibility.” The less someone knows, the more he considers possible — which is why children have a great imagination: not because they are especially creative, but because they do not yet know the obstacles.
In his lecture, Hegel draws a practical conclusion from this that grounds the section. Empty possibility is “a most trivial form of reflection, and an emptiness of the understanding, to occupy oneself with it” — and it especially befalls those who want to be sharp-witted and cautious and thereby “arrive at the notion that something else is still possible, that one could also think it otherwise.” In practice this looks like: “People who cannot make up their minds have only one possibility. If one never wants to act except when quite certain of one’s cause, one could do little.”[1]
He immediately names the remedy, and it is no appeal to resolve: empty possibility “arises when one has not entered into the content.” Whoever immerses himself in the matter loses track of the number of possibilities not out of courage but out of knowledge. The reversal: the more we know about the world, the more impossibilities we know — this is no loss but a gain in a sense of reality. But beware: Peter Ustinov warned that in old age one knows so much — “including many things that are not so.” The old can know things that are no longer true. Paradigm shifts call into question the axioms of the previous pattern of explanation — what was considered impossible yesterday is reality today. The sociology-of-science insight (Planck/Kuhn): the new often only prevails once the adherents of the old have died off. This corresponds to the S³ structure of life (Chapter 16): self-differentiation — knowledge is organized into schools and paradigms; self-preservation — every paradigm reproduces itself through training and institutions; self-sublation — the individual scientist dies, but science renews itself precisely through this. The mortality of scientists is not merely a regrettable circumstance but the condition of the possibility of paradigm shifts.
Real possibility: asks about concrete conditions. An acorn has DNA + cellular machinery (ground), and needs soil, water, light (conditions). When all conditions are completely present, the thing enters into existence — not as a checklist one ticks off, but as a system that closes. Then it must occur.
Try this: Think of an insight that closed for you — an aha moment where everything fit together. What was the moment of closure? Was it the addition of one final piece of evidence — or the closing of an entire web of connections, in which the pieces of evidence suddenly supported one another mutually? Precisely this closing is the turn from probably true to must be so.
Contingency as transition. Between possibility and necessity stands a category that is easily skipped over and without which the transition does not follow.
Something that is possible and becomes actual, without it being possible to state why precisely it rather than its opposite, is called contingent. The contingent is the unity of possibility and actuality in their immediate form: it is, but it could also not be.
The point lies in the fact that this determination sublates itself. For the contingent is not groundless — it has conditions, and where all conditions are present, it necessarily occurs. Contingent, then, does not mean: without ground.
Here, however, a confusion must be warded off — one that lies close at hand and would turn Hegel into Laplace. The proposition does not say that everything is determined and we simply do not look far enough — as if contingency were merely our ignorance. For Hegel it is a real determination of actuality, not a gap in our knowledge. What is said is: the contingent has conditions, without these conditions already making its determinateness necessary out of its own concept. Necessity does not arise from our searching long enough, but from the fact that the entire nexus of conditions is grasped as one that mediates itself. [KF]
For the other side of the coin — that a tiny thing can decide everything — Rosenkranz found a sequence one does not forget: “One second, one day, one line, one inch, one word, one stone, one spark, one bloodstain, one sin, and so on — this one thing suffices, in conjunction with these circumstances, these things, these persons and events, to produce precisely this and no other actuality.”[2]
His diagnosis hits exactly the point: precisely because a tiny change would have made everything turn out differently, such a connection seems contingent. “But this possibility is the illusion of mere possibility.” What has occurred has occurred because all conditions came together — the other possibilities were never really possibilities at all.
Hegel here gives the contingent a dignity that is surprising: “The contingent has high value, it is an existence not dependent on another, but immediate.” His example is the organic — it preserves itself and has “within itself a principle of life, not dependent on another.” And he draws the conclusion: “insofar as we oppose the contingent, as the independent, to the necessary, as the dependent, the contingent is thus free, not determined by another.”[3]
This runs counter to the common expectation that Hegel wants to explain contingency away. He sees in it, rather, the first, still undeveloped form of independence — and thus the trace that logic follows all the way to freedom. Whoever takes the contingent merely as a lack of explanation loses the thread that leads to 7.11. A broader context can make the conditions of a contingent occurrence visible — but this does not dissolve its contingency into mere ignorance. What remains contingent is what, under given conditions, can be or not be, insofar as its determinate shape does not follow from its own concept. And this is why contingency passes over into necessity: not because contingency disappears, but because it proves to be dependent on the frame under consideration.
In practice: whoever says that was chance is often thereby saying something about the reach of his own view. But not always — and the distinction must be made: some things are contingent because we do not survey the connection; others remain contingent even when we do survey it, because their determinate shape does not follow from their concept. This is not determinism — it remains open whether every connection can be grasped completely. But it forbids taking chance as an explanation.
Compossibility (co-possibility): Not only “Is A possible?” but “Can A and B be possible together?” Consider two wishes that exclude one another: “I want to save the maximum” and “I want to live luxuriously.” Formally each is possible on its own, but together they are incompatible. The dialectical question: can the contradiction be resolved in a higher form (for instance: investing wisely for the long term)? Ethical consequence: the test of justice is at its core a compossibility test — can what I want for myself coexist with what everyone else wants for themselves? Going further: structural example: capital accumulation and ecological sustainability as a structurally produced incompatibility — not individually solvable, requiring structural transformation. Elaborated in Kapitalismus transformieren.
Substance and Causality
Reality condenses into substance — but not as a dead substrate, rather as a power that posits and withdraws its changing properties (accidents). In the Heidelberg lectures of 1817, Hegel says what is meant by “power”: “Only substance has power in the world. […] All thought, all ideas, and all laws, everything that exerts force in the world, is only power which is substance.”[4] Power here does not mean coercion, but rather: that something bears, carries, sustains. Spinoza as dark background: his one substance (Deus sive Natura) solves the Descartes problem — instead of two separate substances (extension, thought) that a pineal gland must join together, Spinoza grasps both as attributes of one and the same substance. What Descartes separates, and what Leibniz can only bring together through a predetermined correspondence (pre-established harmony), is with Spinoza one from the outset. Within each attribute there are infinitely many modes — the individual things (this table, that thought). How Hegel treats Spinoza changes between the first and the last lecture course, and the difference is instructive. In 1817, in Heidelberg, he says curtly: “Spinozist philosophy is a true standpoint from which one can proceed,” but “Spinozism remains stuck at substance and thus becomes one-sided.”[4:1] In 1831, in the last lecture course before his death, Hegel starts differently — he defends Spinoza first: “In Spinozism the same misunderstanding occurs; people say it is pantheism and atheism.” Only afterward comes the limit: “that, admittedly, is not enough, for God is substantial subject, substantial spirit.”[5]
The objection remains the same, but it now stands at the end rather than at the beginning. Whoever wants to go beyond a position must first defend it against its bad critics. [KF]
Hegel’s critique: Spinoza explains that there are modes (they follow from the nature of God as the 180° follow from the triangle), but not how the one substance differentiates itself into many modes — where the inner dynamic comes from that lets the many finite things arise out of the one infinite. Substance has modes, but it does not generate them out of an inner activity. It rests in eternal self-identity. Hegel’s extension: substance must become subject — it must differentiate itself actively, not merely have modes. Differentiation is not a defect but the way in which substance realizes itself.
“The Matter Itself” — The Truth Principle of the Logic of Essence
Between appearance (Chapter 6) and actuality (Chapter 7) stands a transition that Hegel calls “the matter itself.” Work through this: In an argument, someone says: “Let’s get to the matter at hand.” What does he mean? Not a particular perspective, but that about which all perspectives are speaking — the shared point of reference. “The matter itself” is what shows itself, through all subjective representations, as what is actually at stake. It is neither the inner (the hidden essence) nor the outer (the surface), but the unity of both: what shows itself in the matter, and the matter that shows itself. This is the truth principle of the logic of essence: truth is not something hidden that we must seek, but what arises of itself from an honest engagement with the phenomena.
Causality — Three Stages
Carry out the transition: Why is substance not enough? Because it explains what stands behind the appearances, but not why something happens. The transition to causality is the step from “What is there?” to “Why does it happen?”
1. Formal causality: Cause -> effect as an abstract relation. “The storm knocked down the tree.” That sounds simple, but it is problematic: What is the storm? A complex of pressure differences, temperatures, soil moisture — the one cause, on closer inspection, disintegrates into infinitely many conditions. Hume’s skeptical objection: We never see causation, only temporal succession. Hegel’s answer: Hume is right that formal causality is insufficient — but wrong that it is merely habit. Causality must develop.
2. Determinate (finite) causality: The cause loses itself in the effect — it enters into it and is then used up. The match is burned after lighting the candle. Every effect becomes the cause of the next (domino effect): A causes B, B causes C, ad infinitum. This is the bad infinity of causality — the endless regress. In practice this means: if someone asks “What was the cause?”, the honest answer is always: “There is no the cause, but a web of conditions.” Whoever insists on the one cause is simplifying ideologically.
3. Infinite (free) causality: The cause remains preserved in the effect — it does not lose itself. Illustrative images: The sun shines and is not used up (on human timescales). The teacher teaches and thereby becomes not more foolish but wiser. These images illustrate the logical structure but do not prove it — the proof lies in thinking through the stages of causality themselves. The decisive turn: the effect reacts back upon the cause. The student changes the teacher. The effect becomes the cause of the cause -> reciprocal action [Wechselwirkung].
The transition: Why does it not remain at the sequence A causes B causes C? Because the effect acts back upon the cause, and necessarily so. Julie Maybee describes this step precisely: the cause must act upon the effect in order to sublate the immediacy that the effect gained in its reaction. The reaction preserves this immediacy — it shows that the effect really had something of its own — and at the same time cancels it, because afterward the effect no longer stands independent.[6]
With this, the sequence is not extended but closed: what appeared as second acts back upon the first and makes it into what it is.
Reciprocal Action — The Highest Form of the Logic of Essence
Carry this out: Take a seemingly one-sided causal relation — “upbringing shapes the child.” True. But: the child also shapes those who raise it. And what kind of child it is determines what kind of upbringing takes place, which in turn determines what kind of child emerges. There is no fixed first and second term — both constitute each other reciprocally within the process. Once you have seen this, you will no longer find purely one-sided causality anywhere.
In reciprocal action, A and B mutually constitute one another: each moment is both determining and determined, and both exist only within this mutual determination. Theory shapes observation, observation corrects theory. Language shapes thought, thought transforms language. Supply and demand determine each other — there is no market price that exists independently of both.
What reciprocal action does not achieve: it does not know itself. A nexus of mutual determination knows nothing of itself — that already belongs on the side of the Concept (cf. 7.11). What does this mean concretely? A couple who understand that they shape each other can shape this mutual formation consciously. A science that understands that theory and empirical observation mutually determine each other can organize this process methodically.
The Truth of Necessity Is Freedom
There is an obvious short circuit to avoid here. One might say: if A is determined by B and B by A, then the system A–B determines itself, and that is freedom. This does not hold, and the counterproof is easy to find: a thermostat, a predator-prey system, any feedback loop determines itself reciprocally. No freedom and no concept follows from that. [KF]
What reciprocal action actually accomplishes is a negative result, and it is a significant one: the fixed difference between cause and effect disappears. Each term is both, and this shows that the determination does not come from outside — one-sided determination by another is sublated. Nothing more. The unity of the connection is present, but it is merely found, not posited as its own.
The concept grasps this same unity positively: as self-determination, which does not simply find its distinctions but posits them as its own moments and remains at home with itself within them.
Julie Maybee has a formula for this difference that makes it graspable: until now, the unity was determined from below — through the elements it comprises. Now it generates its determination from above, through its own activity.[7] Precisely here lies the difference from the feedback loop: the loop is defined by its terms, whereas the concept defines them. That is the difference from the feedback loop — the loop has its terms, it does not posit them. Hegel puts it concisely in his lectures: necessity is “blind, has no purpose within itself; the concept alone is what is clear, transparent, self-understanding.”
Only with this is freedom attained, and indeed in the determination that Chapter 12 unfolds: “to be with oneself, but not in an abstract way, rather to be with oneself in the content of the determination.” Not feedback, but the recognition of one’s own determination. Three stages: blind necessity (laws operate but are not understood — the stone falls), cognized necessity (why it must be so is grasped — the physicist understands gravitation), free necessity (the thinking being recognizes that it itself carries out the structures — the philosopher recognizes that he applies the categories, rather than merely undergoing them). Freedom is not arbitrariness, but cognized and appropriated necessity.
Lectures on the Science of Logic, Kehler transcript, lecture course 1825: GW 23.1, pp. 372f. ↩︎
Rosenkranz, System der Wissenschaft, Königsberg 1850, § 147 (p. 79). ↩︎
Kehler transcript, lecture course 1825: GW 23.1, p. 373. ↩︎
Lectures on the Science of Logic, transcript by Good, Heidelberg lecture course 1817: GW 23.1, pp. 108 f. ↩︎ ↩︎
Transcript by Karl Hegel, Berlin lecture course 1831 — Hegel’s last Logic lectures: GW 23.2, p. 725. ↩︎
Maybee, Picturing Hegel, on the transition to reciprocal action: “The Cause must work on the Effect to sublate the immediacy that the Effect developed in reaction to the Cause.” ↩︎
Julie E. Maybee, Picturing Hegel. An Illustrated Guide to Hegel’s Encyclopaedia Logic, Lanham 2009, on the transition to the concept: “Because the One cause is no longer defined from the bottom-up but instead generates its own definition from the top-down, it can no longer be defined simply as the One cause anymore.” ↩︎