BOOK I PART II
that all bodies, which discover themselves to
the eye, appear as if painted on a plain sur-
face, and that their different degrees of remote-
ness from ourselves are discovered more by
reason than by the senses. When I hold up my
hand before me, and spread my fingers, they
are separated as perfectly by the blue colour of
the firmament, as they coued be by any visi-
ble object, which I coued place betwixt them.
In order, therefore, to know whether the sight
can convey the impression and idea of a vac-
uum, we must suppose, that amidst an entire
darkness, there are luminous bodies presented
to us, whose light discovers only these bodies
themselves, without giving us any impression
of the surrounding objects.
We must form a parallel supposition con-
cerning the objects of our feeling. It is not