The Call of Cthulhu, by H.P. Lovecraft

Of such great powers or beings there may be conceivably a survival . . . a survival of a hugely remote period when . . . consciousness was manifested, perhaps, in shapes and forms long since withdrawn before the tide of advancing humanity . . . forms of which poetry and legend alone have caught a flying memory and called them gods, monsters, mythical beings of all sorts and kinds . . .

— Algernon Blackwood