Kant's Critique of Pure Reason
BOOK II: ANALYTIC OF PRINCIPLES
Chapter 2: SYSTEM OF ALL PRINCIPLES OF PURE UNDERSTANDING
Section 3C) Third Analogy: Principle of Coexistence, in Accordance with the
Law of Reciprocity or Community (p. 233)
All substances, in so far as they can be perceived to coexist in space, are in thoroughgoing reciprocity.
THERFORE: It is necessary that the substances stand immediately or mediately in dynamical community if their coexistence is to be known in any possible experience.
- Things are coexistent when in empirical intuition the perceptions of them can follow upon one another reciprocally.
- We cannot assume that because things are set in the same time that their perceptions can follow reciprocally. (Because time itself cannot be perceived.)
- Influence: relation of substances in which one contains the ground of the determinations (accidents) of another.
- Community or Reciprocity: relation of substances where each contains the ground of the determinations in the other.
- We know two substances are in the same time when the order in the synthesis of apprehension of the manifold is a matter of indifference.
- If each is completely isolated, (none receives reciprocal influences) coexistence would not be a possible perception.
- Therefore, there must be something through which A determines for B and vice versa, its position in time.
- Only that which is the cause of another determines the position of the other in time.
Back to the Second Analogy:Principle of Succession in Time in Accordance with the Laws of Causality
- They thereby constitute a whole.
- There are three dynamical relations:
- Composition: the appearances stand outside one another and yet in connection, constituting a composite.
Forward to The Postulates of Empirical Thought in General
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