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Space is a necessary a priori representation and a pure a priori intuition

The passage

Space is a necessary a priori representation that underlies all outer intuitions, the condition of the possibility of appearances and not a determination dependent on them; it is not a general concept but a pure intuition, and an a priori intuition underlies all concepts of it.

Der Raum ist eine nothwendige Vorstellung a priori, die allen äußeren Anschauungen zum Grunde liegt.

Space is a necessary a priori representation that underlies all outer intuitions.

Kritik der reinen Vernunft A 24–25 / B 38–40, Transcendental Aesthetic §2, points 2 and 3 (AA 3:52.30–53.16)

Der Raum ist kein discursiver oder, wie man sagt, allgemeiner Begriff von Verhältnissen der Dinge überhaupt, sondern eine reine Anschauung.

Space is not a discursive or, as one says, general concept of relations of things in general, but a pure intuition.

Kritik der reinen Vernunft A 24–25 / B 38–40, Transcendental Aesthetic §2, points 2 and 3 (AA 3:52.30–53.16)

Hieraus folgt, daß in Ansehung seiner eine Anschauung a priori (die nicht empirisch ist) allen Begriffen von demselben zum Grunde liegt.

From this it follows that, with respect to space, an a priori intuition (which is not empirical) underlies all concepts of it.

Kritik der reinen Vernunft A 24–25 / B 38–40, Transcendental Aesthetic §2, points 2 and 3 (AA 3:52.30–53.16)

The first half is the second point of the metaphysical exposition of space (A 24 / B 38–39, AA 3:52.30–53.04); its ground there, that one can never represent that there is no space though one can think that no objects are found in it (AA 3:52.31–33), is not formalized here. The second half is the third point and its conclusion: space is a pure intuition, not a discursive concept (AA 3:53.05–06), and an a priori, non-empirical intuition underlies all concepts of it (AA 3:53.14–16).

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