"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"

This quote by Arthur Miller is describing the distinction between theater and movie. In theater, the audience knows that they are taking a look at a set, or a home, but it is not a genuine home. It is a representation of a house, and the audience knows this. On the other hand, when watching a film, the camera blots out the quote marks, making it appear as if the house is real. This quote is stressing the distinction in between theater and film, and how the audience perceives the 2 in a different way. Theater is more of an abstract art kind, while film is more realistic. The audience knows that they are viewing a representation of a house in theater, but in film, the audience is more likely to think that the house is genuine.