v.) is absurd.

If the latter, then (by Prop.

vii.) substance absolutely infinite could cease to exist, which (by Prop.

xi.) is also absurd.
Corollary .-- It follows, that no substance, and consequently no extended substance, in so far as it is substance, is divisible.
Note .-- The indivisibility of substance may be more easily understood as follows.

The nature of substance can only be conceived as infinite, and by a part of substance, nothing else can be understood than finite substance, which (by Prop.