There remains to be answered the question whether Kant's position is tenable in its other form, viz. that while we cannot say that reality is spatial, we can and must say that the appearances which it produces are spatial. This question, in view of the foregoing, can be answered as soon as it is stated. We must allow that reality is spatial, since, as has been pointed out, assertions concerning the apparent shape of things presuppose that they are spatial. We must equally allow that an appearance cannot be spatial. For on the one hand, as has just been shown, space and spatial relations can only qualify something the existence of which is not relative to perception, since it is impossible to perceive what is spatial as it is; and on the other hand an appearance, as being _ex hypothesi_ an appearance to some one, i. e. to a percipient, must be relative to perception. We may say, then, generally, that analysis of the distinction between appearance and reality, as it is actually drawn in our ordinary consciousness, shows the falsity of both forms of the philosophical agnosticism which appeals to the distinction. We know things; not appearances. We know what things are; and not merely what they appear but are not. We may also say that Kant cannot possibly be successful in meeting, at least in respect of space, what he calls 'the easily foreseen but worthless objection that the ideality of space and of time would turn the whole sensible world into pure illusion'.[29] For space, according to him, is not a property of things in themselves; it cannot, as has been shown, be a property of appearances; to say that it is a property of things as they appear to us is self-contradictory; and there is nothing else of which it can be said to be a property. [29] _Prol_., § 13, Remark iii. (Cf. p. 100 note.) Cf. the confused note B. 70, M. 42. (See Dr. Vaihinger's Commentary on the _Critique_, ii, 488 ff.) In conclusion, it may be pointed out that the impossibility that space[30] and spatial characteristics should qualify appearances renders untenable Kant's attempt to draw a distinction between reality and appearance _within_ 'phenomena' or 'appearances'. The passage in which he tries to do so runs as follows: [30] The case of time can be ignored, since, as will be seen later (pp. 112-14), the contention that space is 'ideal' really involves the admission that time is real.