e walls, are so far
from putting a stop to the mind in its further progress in space and
extension that it rather facilitates and enlarges it. For so far as that
body reaches, so far no one can doubt of extension; and when we are come
to the utmost extremity of body, what is there that can there put a
stop, and satisfy the mind that it is at the end of space, when it
perceives that it is not; nay, when it is satisfied that body itself can
move into it? For, if it be necessary for the motion of body, that there
should be an empty space, though ever so little, here amongst bodies;
and if it be possible for body to move in or through that empty
space;--nay, it is impossible for any particle of matter to move but
into an empty space; the same possibility of a body's moving into a void
space, beyond the utmost bounds of body, as well as into a void space
interspersed amongst bodies, will always remain clear and evident: the
idea of empty pure space, whether within or beyond the confines of all
bodies, being exactly the same, differing not in nature, though in bulk;
and there being nothing to hinder body from moving into it. So that
wherever the mind places itself by any thought, either amongst, or
remote from all bodies, it can, in this uniform idea of space, nowhere
find any bounds, any end; and so must necessarily conclude it, by the
very nature and idea of each part of it, to be actually infinite.

5. And so of Duration.

As, by the power we find in ourselves of repeating, as often as we will,
any idea of space, we get the idea of IMMENSITY; so, by being able to
repeat the idea of any length of duration we have in our minds, with all
the endless addition of number, we come by the idea of ETERNITY. For we
find in ourselves, we can no more come to an end of such repeated ideas
than we can come to the end of number; which every one perceives he
cannot. But here again it is another question, quite different from our
having an IDEA of eternity, to know whether there were ANY REAL BEING,
whose duration has been eternal. And as to this, I say, he that
considers something now existing, must necessarily come to Something
eternal. But having spoke of this in another place, I shall say here no
more of it, but proceed on to some other considerations of our idea of
infinity.

6. Why other Ideas are not capable of Infinity.

If it be so, that our idea of infinity be got from the power we observe
in ourselves of repeating, witho