In the theater, while you recognized that you were looking at a house, it was a house in quotation marks ... on screen, the quotation marks tend to be blotted out by the camera. The problem was to sustain at any cost the feeling you had in the theater that you were watching a real person, yes, but an intense condensation of his experience, not simply a realistic series of episodes. It isn't easy to do in the theater, but it's twice as hard in film.