13. Whence originates extension in our universe, and in the animals?
The world of life contains no extension. Sensation, whose testimony
hinders us from believing what we are told in this respect, reveals
to us here and there the world of life. But reason tells us that, if
we see it thus, it is not that it is really extended here and there,
but that all that possesses extension has participated in the world of
life, which, however, has no extension.