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WorkGeorg Wilhelm Friedrich Hegel

Science of Logic

Hegel reopens the metaphysics Kant had closed, deriving the categories of thought from pure being onward — the vast "greater Logic" he wrote while running a Nuremberg school.

by Georg Wilhelm Friedrich Hegel1,764 passages held

  • German, the original language
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Original title
Wissenschaft der Logik
First published
(aged 42)
Original language
German

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Overview

Kant had pronounced the old metaphysics closed: reason that reaches past experience toward being, the soul or God, he argued, generates only illusion, and his Critique fenced thought inside the limits of possible experience. This is the fence Hegel set out to pull down. He wrote the work not from a university chair but as headmaster of a secondary school in Nuremberg, newly married, teaching adolescents by day through the years 1808 to 1816. It came out in three volumes — the Doctrine of Being in 1812, of Essence in 1813, of the Concept in 1816 — and readers call it the greater Logic to mark it off from the compressed version he later folded into his Encyclopaedia. Its wager is that pure thought, if followed without external prop, unfolds its own categories in order: being, emptied of all content, passes into nothing, and the movement between them is becoming. From there the categories multiply toward what Hegel names the Idea. It asks enormous patience. Marx read it again while composing Capital and wrote that he would like, one day, to set out plainly what was rational in its method; he never did. For much of the twentieth century Russell and his heirs dismissed the whole edifice as resting on a logic Frege had superseded. Then it came back — read now as a theory of categories, or as Kant's own transcendental logic carried through to its end. Hegel was still revising the first book when he died in 1831.

Key concepts

Why is this called the 'greater Logic'?

Readers call it the greater Logic to mark it off from the compressed version Hegel later folded into his Encyclopaedia. This is the full, three-volume work — the Doctrine of Being (1812), of Essence (1813), and of the Concept (1816) — written at length while he ran a Nuremberg school. The name signals scale and detail: the same architecture, worked out with the patience the shorter text had to sacrifice.

What is pure being, and why can't the book start elsewhere?

Pure being is thought emptied of every determination — being with no quality, quantity or relation. Hegel begins here because a presuppositionless science may assume nothing, and this is the least it can say. Precisely because it is so empty, pure being cannot be told apart from pure nothing, and that collapse is what forces the first advance. The beginning is chosen for its poverty, not its certainty.

What are the three doctrines the Logic moves through?

The work unfolds in three: Being, Essence, and the Concept. Being covers the immediate categories — quality, quantity, measure. Essence covers reflected ones — identity, difference, ground, appearance, actuality. The Concept covers thought grasping itself — the notion, judgment, syllogism, and finally the Idea. Each doctrine is more mediated than the last, so the order tracks thought deepening from surface immediacy toward full self-comprehension.

What does Hegel mean by the Concept?

The Concept, or Notion, is not an abstract label the mind applies from outside but the self-determining universal that particularizes itself and stays itself through its own differences. In the Doctrine of the Concept it works through judgment and syllogism as forms of thought's own life, not merely rules of inference. It is where logic passes from categories about objects to thought that is transparent to itself.

What is the Idea, where the Logic ends?

The Idea is the culmination of the categories: the full unity of concept and reality, thought that is adequate to being. It is not a thing but the completed structure the whole book has been deriving — reason recognizing that its own determinations are the determinations of what is. From this endpoint Hegel's system passes over into the philosophy of nature, the Idea releasing itself into externality.

Themes of the book

What this book returns to, gathered into themes and ordered by how much of the text each one occupies.

Reopening the metaphysics Kant closed

After Kant fenced reason inside possible experience, is there any way for thought to reach being, or is every such attempt bound to breed illusion? Hegel wagers that pure thought, left to itself, can.

Kant had declared the old metaphysics finished: reason that reaches past experience toward being generates only illusion. Hegel set out to pull that fence down, and this is the demolition. His wager is that pure thought, followed without any external prop from experience, unfolds its own categories in strict order and so recovers a genuine science of what is. Against formal logic, which only regulates correct inference, and against Kant's limits, he offers a logic that is at once metaphysics — the self-development of thought is the self-development of reality. It asks enormous patience, and readers call it the greater Logic to mark its scale.

  • logic
  • metaphysics
  • methodology
  • concept
  • universality
  • necessity
  • determination
  • ground
  • totality

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Categories that move themselves

Where does thinking begin, if it may assume nothing? Hegel starts from being emptied of all content and shows it will not hold still — the beginning is already in motion.

The book opens with pure being, thought stripped of every determination. So emptied, Hegel argues, it is indistinguishable from pure nothing, and the restless passage between them is becoming — the first content, generated rather than assumed. From there the categories multiply by their own necessity through quality, quantity and measure, each determination calling up its own negation and a richer successor. Nothing is imported from outside; the movement is driven by the contradictions internal to each concept. This is why the beginning cannot be a fixed axiom: it is the least determinate thought, and its poverty is exactly what sets the whole in motion.

  • quality
  • quantity
  • measure
  • negation
  • contradiction
  • mediation
  • infinity
  • determination
  • unity
  • negativity

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Essence, reflection, and contradiction

Is contradiction only a sign that we have thought badly, or is it the very thing that keeps reality moving? Hegel makes it the engine rather than the error.

In the Doctrine of Essence, Hegel argues that identity is not bare self-sameness but already contains difference within it — a thing is what it is only by not being what it is not. Pushed far enough, difference sharpens into contradiction, and contradiction, far from being merely a fault in reasoning to be avoided, is for Hegel the root of all movement and life. This overturns the Aristotelian rule that treats non-contradiction as thought's first law. Essence here is not a hidden something lying behind appearance but the movement of reflection itself, the way a thing is mediated through its own opposite.

  • essence
  • reflection
  • identity
  • contradiction
  • negation
  • ground
  • form
  • negativity
  • mediation

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Within this work

passages held
1,764
distinct concepts
1,059
by passages held, corpus-wide
#29

What this book thinks together

The wheel takes this book’s leading concepts and shows how often they come up together. The wider the band between two, the more of its passages speak of both. Among them, most often together: “contradiction” and “dialectics”.
Concept co-occurrence, strongest first 8 concepts, joined by 28 pairings. 79 pairings reach beyond these concepts and are not drawn.
ConceptPaired conceptShared passages
contradictiondialectics49
dialecticsnegation44
conceptmediation39
conceptdialectics33
contradictionnegation28
dialecticsmediation27
dialecticsidentity26
mediationnegation26
identityreflection25
mediationreflection22
contradictionidentity20
dialecticsreflection20
identitynegation20
dialecticsquantity19
negationreflection19
identitymediation16
conceptcontradiction15
conceptnegation14
contradictionreflection14
negationquantity14
conceptquantity13
contradictionquantity10
conceptreflection9
conceptidentity7
contradictionmediation6
mediationquantity5
identityquantity2
quantityreflection1

Works held

The author's work in order, this book marked in place. Your-language title first, the original beneath it where the two differ; side chips show which full texts are held.

  1. 1801 The Difference Between Fichte's and Schelling's System of Philosophy (Differenz des Fichteschen und Schellingschen Systems der Philosophie)

    The book that opened Hegel's Jena years and first put his name before the public — as Schelling's ally, a role his essays for their Critical Journal continued.

     DE
  2. 1802 Faith and Knowledge (Glauben und Wissen)

    Written at the height of the alliance with Schelling: the longest of Hegel's pieces for their journal, and his fullest early reckoning with Kant.

     DE
  3. 1802 How the Ordinary Human Understanding Takes Philosophy (Wie der gemeine Menschenverstand die Philosophie nehme)

    Of Hegel's reviews for the Critical Journal, the most openly mocking: the journal's programme of severity turned on a single named Kantian.

     DE
  4. 1802 On the Essence of Philosophical Criticism (Über das Wesen der philosophischen Kritik überhaupt)

    Unsigned, and claimed for both editors ever since: the programme at the head of the journal Hegel and Schelling ran in 1802–03, which Hegel's reviews in its later issues put into practice.

     DE
  5. 1802 On the Scientific Ways of Treating Natural Law (Über die wissenschaftlichen Behandlungsarten des Naturrechts)

    Spread across the Critical Journal's last two issues: Hegel's longest published early writing on law and the state, composed while he was still an unsalaried lecturer at Jena.

     DE
  6. 1802 Relationship of Skepticism to Philosophy (Verhältnis des Skeptizismus zur Philosophie)

    Between the Krug review and Faith and Knowledge in the Critical Journal's run, the essay in which Hegel first says what doubt does for philosophy.

     DE
  7. 1807 Phenomenology of Spirit (Die Phänomenologie des Geistes)

    Written as Napoleon's army entered Jena and published in 1807, the book Hegel meant as the doorway into his system — and the one many readers still enter him through.

     DE
  8. 1812 Science of Logic (Wissenschaft der Logik) you are here DE
  9. 1817 Encyclopedia of the Philosophical Sciences in Basic Outline (Enzyklopädie der philosophischen Wissenschaften im Grundrisse)

    The frame for Hegel's other books: its first part condenses the Science of Logic, and the Philosophy of Right expands one section of its third part. Hegel taught from it and rewrote it twice.

     DEEN
  10. 1821 Elements of the Philosophy of Right (Grundlinien der Philosophie des Rechts)

    The last book Hegel published in his lifetime apart from new editions of the Encyclopaedia: the textbook of his Berlin law lectures, and the one of his books most argued over by political readers.

     DE
  11. 1831 On the English Reform Bill (Über die englische Reformbill)

    Some three decades after his first, unpublished pamphlets on Württemberg and on the German constitution, Hegel's last venture into the politics of the day.

     DE
  12. 1833 Lectures on the History of Philosophy (Vorlesungen über die Geschichte der Philosophie)

    Among the posthumous lecture books, the course Hegel carried through nearly his whole teaching life, and the one that closes on his thanks to the students who had followed it.

     DE
  13. 1835 The Philosophy of Fine Art (Vorlesungen über die Ästhetik)

    Not a book Hegel wrote but Berlin lectures assembled by a student after his death — the most influential philosophy of art of the nineteenth century, and a contested reconstruction of it.

     EN
  14. 1835 Who Thinks Abstractly? (Wer denkt abstrakt?)

    Hegel in the manner of a magazine essayist: short, comic and aimed at the general reader, though he never published it himself.

     DE
  15. 1837 Lectures on the Philosophy of History (Vorlesungen über die Philosophie der Geschichte)

    For decades the most widely read of Hegel's works, and now the most contested — lectures on world history, published after his death, reading it as the growth of human freedom.

     DE
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