Excerpt:
Which brings us to the most potent tool of storytellers. Fear. And not just fear, but dread. Dread is the first and strongest of the three kinds of fear. It is that tension, that waiting that comes when you know there is something to fear but you have not yet identified what it is. The fear that comes when you first realize that your spouse should have been home an hour ago; when you hear a strange sound in the baby's bedroom; when you realize that a window you are sure you closed is now open, the curtains billowing, and you're alone in the house.
Terror only comes when you see the thing you're afraid of. The intruder is coming at you with a knife. The headlights coming toward you are clearly in your lane. The klansmen have emerged from the bushes and one of them is holding a rope. This is when all the muscles in your body, except perhaps the sphincters, tauten and you stand rigid; or you scream; or you run. There is a frenzy to this moment, a climactic power—but is the power of release, not the power of tension. And bad as it is, it is better than dread in this respect: Now, at least, you know the face of the thing you fear. You know its borders, its dimensions. You know what to expect.
Horror is the weakest of all. After the fearful thing has happened, you see its remainder, its relics. The grisly, hacked-up corpse. Your emotions range from nausea to pity for the victim. And even your pity is tinged with revulsion and disgust; ultimately you reject the scene and deny its humanity; with repetition, horror loses its ability to move you and, to some degree, dehumanizes the victim and therefore dehumanizes you…
So: I don't write horror stories. True, bad things happen to my characters. Sometimes terrible things. But I don't show it to you in living color. I don't have to. I don't want to. Because, caught up in dread, you'll imagine far worse things happening than I could ever think up to show you myself.
-Orson Scott Card
Happy Halloween!