Since the substance of the thing, in itself, which is my property, is its externality, i.e. its lack of substantiality — it is not, as against me, an end in itself (§ 42) — and since this realized externality is the use or utilization I make of it, the entire use or utilization is the thing in its whole compass, so that, if this use is mine, I am the owner of the thing, of which nothing remains, beyond the entire compass of its use, that could be the property of another.