“As I was walking among the fires of Hell, delighted with the enjoyments of Genius, which to Angels look like torment and insanity, I collected some of their Proverbs; thinking that as the sayings used in a nation mark its character, so the Proverbs of Hell show the nature of Infernal wisdom better than any description of buildings or garments.
When I came home, on the abyss of the five senses, where a flatsided steep frowns over the present world, I saw a mighty Devil, folded in black clouds, hovering on the sides of the rock; with corroding fires he wrote the following sentence now perceived by the minds of men, and read by them on earth:
How do you know but ev’ry Bird that cuts the airy way,
Is an immense World of Delight, clos’d by your senses five?”
– William Blake, The Marriage of Heaven and Hell