Note 18 — Chapter III
Reading edition
B. 35, M. 22 (quoted p. 39). It is noteworthy (1) that the passage contains no argument to show that extension and shape are not, equally with divisibility, thought to belong to an object, (2) that impenetrability, which is here said to belong to sensation, obviously cannot do so, and (3) that (as has been pointed out, p. 39) the last sentence of the paragraph in question presupposes that we have a perception of empty space, and that this is a form of perception.