“Life in this world,” he said, “is, as it were, a sojourn in a cave. What can we know of reality? For all we see of the true nature of existence is, shall we say, no more than bewildering and amusing shadows cast upon the inner wall of the cave by the unseen blinding light of absolute truth, from which we may or may not deduce some glimmer of veracity, and we as troglodyte seekers of wisdom can only lift our voices to the unseen and say, humbly, ‘Go on, do Deformed Rabbit . . . it’s my favorite.’ ”
from Small Gods by Terry Pratchett.

this is a parody of Plato's Republic, Book VII.