“It is true, of course, in an important sense, that a character exists only in his emotions and sensations. Without the expression of feeling, he no more represents a living person than does a fleshless skeleton. If he does not realistically express some credible emotion himself, he will not be likely to arouse feeling in those who watch him. His own characteristics and the plot arrangement should set him in situations that plausibly arouse his own fear, hope, passion, desire, anger, love, jealousy or other emotion, and his own feeling should be expressed so realistically as to arouse emotion in the beholder.”

– Francis Marion (Winner Academy Award for Screenwriting, 1931 and 1932)