Get started

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 Hegel1,726 passages held

  • German, the original language
Sign in or subscribe to discuss this work See it in context
Original title
Wissenschaft der Logik
First published
(aged 42)
Original language
German

Report a rights issue

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 For much of the twentieth century Russell and his heirs dismissed the whole edifice as resting on a logic Frege had superseded.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

Enter a dialogue

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

Enter a dialogue

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

Enter a dialogue

Within this work

passages held
1,726
distinct concepts
1,332
by passages held, corpus-wide
#11

What this book thinks together

Every arc around the wheel is one concept in this book. A ribbon joins two the text reaches for together, and its width is how many of its passages hold both. Strongest: essence with reflection.
Concept co-occurrence, strongest first 8 concepts, joined by 18 pairings. 318 shared passages in all. 82 weaker pairings reach beyond these concepts and are not drawn.
ConceptPaired conceptShared passages
essencereflection33
identityreflection30
negationreflection28
identitynegation24
mediationnegation21
logicnegation19
logicmediation17
essenceidentity16
groundmediation16
logicreflection16
identitylogic15
essenceground13
groundreflection13
mediationreflection13
identitymediation12
essencenegation11
groundnegation11
essencemediation10

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. 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
  2. 1812 Science of Logic (Wissenschaft der Logik) you are here DE
  3. 1817 Hegel's Philosophy of Mind (Enzyklopädie der philosophischen Wissenschaften im Grundrisse)

    Part three of the Encyclopaedia, the one-volume outline of Hegel's whole system; the English text fills his terse paragraphs with additions his editors drew from student notes.

     DEEN
  4. 1835 The Philosophy of Fine Art (of 4): Hegel's Aesthetik (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.

     DEEN
  5. 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
Sign in or subscribe to discuss this work

— or open another of their works