“The oldest and strongest emotion of mankind is fear, and the oldest and strangest kind of fear is fear of the unknown”, wrote H.P Lovecraft in his seminal work about the genre in his “Supernatural Horror in Literature”. The supernatural has long been a source of fascination for mankind and it is only recently that it has been accepted, however reluctantly as a serious literary genre.

The problem being that the real of the supernatural has always called for a certain degree of imagination and a suspension of disbelief. This fear of the unknown has been cruelly stamped out in today's world of realism and scientific advancements. Supernatural fiction is rooted in the fear of the unknown.

The appeal of the spectrally macabre is generally narrow because it demands from the reader a certain degree of imagination and a capacity for detachment from everyday life. Relatively few are free enough from the spell of the daily routine to respond to tappings from outside, and tales of ordinary feelings and events, or of common sentimental distortions of such feelings and events, will always take first place in the taste of the majority; rightly, perhaps, since of course these ordinary matters make up the greater part of human experience. But the sensitive are always with us, and sometimes a curious streak of fancy invades an obscure corner of the very hardest head; so that no amount of rationalization, reform, or Freudian analysis can quite annul the thrill of the chimney-corner whisper or the lonely wood.

There is here involved a psychological pattern or tradition as real and as deeply grounded in mental experience as any other pattern or tradition of mankind; coeval with the religious feeling and closely related to many aspects of it, and too much a part of our innermost biological heritage to lose keen potency over a very important, though not numerically great, minority of our species.

Because we remember pain and the menace of death more vividly than pleasure, and because our feelings toward the beneficent aspects of the unknown have from the first been captured and formalized by conventional religious rituals, it has fallen to the lot of the darker and more maleficent side of cosmic mystery to figure chiefly in our popular supernatural folklore. This tendency, too, is naturally enhanced by the fact that uncertainty and danger are always closely allied; thus making any kind of an unknown world a world of peril and evil possibilities.

When to this sense of fear and evil the inevitable fascination of wonder and curiosity is superadded, there is born a composite body of keen emotion and imaginative provocation whose vitality must of necessity endure as long as the human race itself. Children will always be afraid of the dark, and men with minds sensitive to hereditary impulse will always tremble at the thought of the hidden and fathomless worlds of strange life which may pulsate in the gulfs beyond the stars, or press hideously upon our own globe in unholy dimensions which only the dead and the moonstruck can glimpse.

With this foundation, no one need wonder at the existence of a literature of cosmic fear. It has always existed, and always will exist; and no better evidence of its tenacious vigour can be cited than the impulse which now and then drives writers of totally opposite leanings to try their hands at it in isolated tales, as if to discharge from their minds certain phantasmal shapes which would otherwise haunt them.

Thus Dickens wrote several eerie narratives; Browning, the hideous poem Childe Roland; Henry James, The Turn of the Screw; Dr. Holmes, the subtle novel Elsie Venner; F. Marion Crawford, The Upper Berth and a number of other examples; Mrs. Charlotte Perkins Gilman, social worker, The Yellow Wall Paper; whilst the humorist, W. W. Jacobs, produced that able melodramatic bit called The Monkey's Paw.

This type of fear-literature must not be confounded with a type externally similar but psychologically widely different; the literature of mere physical fear and the mundanely gruesome. Such writing, to be sure, has its place, as has the conventional or even whimsical or humorous ghost story where formalism or the author's knowing wink removes the true sense of the morbidly unnatural; but these things are not the literature of cosmic fear in its purest sense.

The true weird tale has something more than secret murder, bloody bones, or a sheeted form clanking chains according to rule. A certain atmosphere of breathless and unexplainable dread of outer, unknown forces must be present; and there must be a hint, expressed with a seriousness and portentousness becoming its subject, of that most terrible conception of the human brain -- a malign and particular suspension or defeat of those fixed laws of Nature which are our only safeguard against the assaults of chaos and the dæmons of unplumbed space.