d experimentally know it.

Sec. 93. Then he saw a great many other immaterial Essences[25], which
resembled rusty Looking-glasses, cover'd over with Filth, and besides,
turn'd their Backs upon, and had their Faces averted from those polish'd
Looking-glasses that had the Image of the Sun imprinted upon them; and
he saw that these Essences had so much Filthiness adhering to them, and
such manifold Defects as he could not have conceived. And he saw that
they were afflicted with infinite Pains, which caused incessant Sighs
and Groans; and that they were compass'd about with Torments, as those
who lie in a Bed are with Curtains; and that they were scorch'd with the
fiery Veil of Separation[26]. But after a very little while his Senses
return'd to him again, and he came to himself out of this State, as out
of an Extasie; and his Foot sliding out of this place, he came within
sight of this sensible World, and lost the sight of the Divine World,
for there is no joining them both together in the same State. _For this
World in which we live, and that other are like two Wives belonging to
the same Husband; if you please one, you displease the other_.

Sec. 94. Now, if you should object, that it appears from what I have said
concerning this Vision, that those separated Essences, if they chance to
be in Bodies of perpetual Duration, as the Heavenly Bodies are, shall
also remain perpetually, but if they be in a Body which is liable to
Corruption (such an one as belongs to us reasonable Creatures) that then
they must perish too, and vanish away, as appears from the Similitude of
the Looking-glasses which I have us'd to explain it; because the Image
there has no Duration of itself, but what depends upon the Duration of
the Looking-glass; and if you break the Glass, the Image is most
certainly destroy'd and vanishes. In answer to this I must tell you,
that you have soon forgot the Bargain I made with you. For did not I
tell you before that it was a narrow Field, and that we had but little
room for Explication; and that _Words_ however us'd, would most
certainly occasion Men to think otherwise of the thing than really it
was? Now that which has made you imagine this, is, because you thought
that the Similitude must answer the thing represented in every respect.
But that will not hold in any common Discourse; how much less in this,
where the Sun and its Light, and its Image, and the Representation of
it, and the Glasses, and the Forms whi