eternal and immutable. In fact, this follows immediately, but such a matter is also only an untrue

abstraction. (b) It is said that matter is impenetrable and offers resistance, is tangible, visible, and

so on. These predicates mean nothing else than that matter exists, partly for specific forms of

perception, in general for an other, but partly just as much for itself Both of these are

determinations which belong to matter precisely because it is the identity of space and time, of

immediate being apart from itself or of becoming.

The transition of ideality into reality is demonstrated therefore in the familiar mechanical

phenomena, namely, that ideality can take the place of reality and vice versa; and only the usual