There are two different stories in horror: internal and external. In external horror films, the evil comes from the outside, the other tribe, this thing in the darkness that we don't understand. Internal is the human heart.
John CarpenterHorror stories have always worked on film. It's where they work. That's where vampires and ghosts and UFOs are real. They're not particularly real in life, but they're real on the screen. It's the communal aspect of movie-watching.
John CarpenterWhat a director does... essentially, it's storytelling, but a director also controls the feeling and the sounds and the texture. It's an act of creation, like a symphony or a painting or a story. But with different tools.
John Carpenter