Mr. Wilder’s rule for comedy was simple: Don’t try to make it funny; try to make it real. “I’m an actor, not a clown,” he said more than once.
With his haunted blue eyes and an empathy born of his own history of psychic distress, he aspired to touch audiences much as Charlie Chaplin had. The Chaplin film “City Lights,” he said, had “made the biggest impression on me as an actor; it was funny, then sad, then both at the same time.”
Mr. Wilder was an accomplished stage actor as well as a screenwriter, a novelist and the director of four movies in which he starred. (He directed, he once said, “in order to protect what I wrote, which I wrote in order to act.”) But he was best known for playing roles on the big screen that might have been ripped from the pages of the Diagnostic and Statistical Manual of Mental Disorders.