Melodrama is a form of art, legitimate like any other, as noble as farce, almost as noble as pantomime. The essence of melodrama is that it appeals to the moral sense in a highly simplified state, just as farce appeals to the sense of humour in a highly simplified state. Farce creates people who are so intellectually simple as to hide in packing-cases or pretend to be their own aunts. Melodrama creates people so morally simple as to kill their enemies in Oxford Street, and repent on seeing their mother’s photograph. The object of the simplification in farce and melodrama is the same, and quite artistically legitimate, the object of gaining a resounding rapidity of action which subtleties would obstruct. And this can be done well or ill.
— Charles Dickens (1906).