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If with respect to light, one kind is material, but another immaterial, according to the difference of those illuminating natures, fire and the sun, the light which is immaterial is, in a certain respect, † corrupted; but material light, in a certain respect, pervades through material substances: for the whole air appears to be no less illuminated by the sun than by the fire that is procured by us. And when clouds pass under the sun, the light is in
one part intercepted, and we do…