Any magazine-cover hack can splash paint around wildly and call it a nightmare, or a witches sabbath or a portrait of the devil; but only a great painter can make such a thing really scare or ring true. That's because only a real artist knows the anatomy of the terrible, or the physiology of fear.

A serious adult story must be true to something in life. Since marvel tales cannot be true to the events of life, they must shift their emphasis towards something to which they can be true; namely, certain wistful or restless moods of the human spirit, wherein it seeks to weave gossamer ladders of escape from the galling tyranny of time, space, and natural law.

At night, when the objective world has slunk back into its cavern and left dreamers to their own, there come inspirations and capabilities impossible at any less magical and quiet hour. No one knows whether or not he is a writer unless he has tried writing at night.

The one test of the really weird (story) is simply this--whether or not there be excited in the reader a profound sense of dread, and of contact with unknown spheres and powers; a subtle attitude of awed listening, as if for the beating of black wings or the scratching of outside shapes and entities on the known universe's utmost rim.