[435] E.g. Cohen, Riehl, Caird, Watson.
[436] Cf. Watson, The Philosophy of Kant explained, p. 83: “Kant, therefore, concludes from the logical priority of space that it is a priori.”
[437] Upon it Kant bases the assertion that space is an Idea of reason; cf. above, pp. 96-8, and below, pp. 165-6, 390-1.
[438] This second argument is not in the Dissertation.
[439] Cf. Vaihinger, ii. pp. 196-7. The corresponding argument on time, in the form in which it is given in the second edition, is, as we shall find, seriously misleading. It has caused Herbart and others to misinterpret the connection in which this corollary stands to the main thesis. Herbart’s interpretation is considered below, p. 124.
[440] Cf. Vaihinger, ii. p. 220.
[441] Reflexionen, ii. 403.
[442] “That in space there are no more than three dimensions, that between two points there can be but one straight line, that in a plane surface from a given point with a given straight line a circle is describable, cannot be inferred from any universal notion of space, but can only be discerned in space as in the concrete.” Cf. also Prolegomena, § 12.
[443] In the second edition, the third.
[444] For a different view cf. Vaihinger, ii. p. 233.