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The Library
of Alexandria

The Critique of Pure Reason, Part 3 summary

Part 3 of 79 · 3 min to read the part

In § 2. Metaphysical Exposition of This Concept Section I. On Space, the speaker argues that space makes external experience possible rather than coming from it.

What happens

  1. The speaker distinguishes external sense, which presents objects spatially, from internal sense, which presents inner states through time.
  2. External sensations require an existing representation of space, so experience cannot supply that representation.
  3. We can imagine space without objects, but cannot imagine its absence; space therefore conditions external appearances.
  4. Different spaces are restrictions within one encompassing space, and geometry draws its certainty from a priori intuition.
  5. Space contains infinitely extendable parts, supporting its classification as an intuition rather than a general concept.

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What does the speaker say we can imagine?

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