" And perhaps, Mrs. Morgan on Lanypwll Farm put all this much better in the speech of symbolism, when she murmured about the children of the pool. For if there is a landscape of sadness, there is certainly also a landscape of a horror of darkness and evil; and that black and oily depth, overshadowed with twisted woods, with its growth of foul weeds and its dead trees and leprous boughs, was assuredly potent in terror. To Roberts, it was a strong drug, a drug of evocation; the black deep without calling to the black deep within, and summoning the inhabitant thereof to come forth. "
― Arthur Machen , The Terror