The Dreams in the Witch-House

The Dreams in the Witch-House is a horror short story by American writer H. P. Lovecraft, part of his Cthulhu Mythos cycle. Excerpt: "It was also possible that the inhabitants of a given dimensional realm could survive entry to many unknown and incomprehensible realms of additional or indefinitely multiplied dimensions—be they within or outside the given space-time continuum—and that the converse would be likewise true. This was a matter for speculation, though one could be fairly certain that the type of mutation involved in a passage from any given dimensional plane to the next higher one would not be destructive of biological integrity as we understand it."