I will not attempt to sound the depths of psychoanalysis to explain human behavior, which is inexplicable as life itself. More than sex or infantile aberrations, I believe that most of our ideational compulsions stem from atavistic causes—however, I did not have to read books to know that the theme of life is conflict and pain. Instinctively, all my clowning was based on this. My means of contriving comedy plot was simple. It was the process of getting people in and out of trouble.
-Charles Chaplin, My Autobiography