Until my eyes were opened, I almost inevitably cherished the same idea as others about the countless wonders that appear in the next world. I thought that neither light nor the kind of phenomena light creates—to say nothing of sensory powers—could possibly exist in the next world. This thinking grew out of a delusion that the well-educated adopt concerning immateriality, which they ascribe so broadly to spirits and to everything in a spirit’s life. Such a delusion could yield only one way to conceive of anything spiritual: that because it lacked matter, either it was too vague to be grasped in any way or it was nothing at all. That is what “immaterial” means, of course. The reality is diametrically opposed. If spirits were not organic—and if angels were not organic substances—they would not be able to speak or see or think.
In the other life, the most miraculous things present themselves to the eyesight of spirits and angels, thanks to light radiating from its heavenly and spiritual origin in the Lord. These sights include parks, cities, palaces, houses, the most beautiful kinds of atmosphere, and much else besides.
from Secrets of Heaven, Volume 2, Sections 1533, 1534