Scorsese still found time for a four-hour documentary in 1995, titled "A Personal Journey with Martin Scorsese Through American Movies", offering a thorough trek through American cinema. It covered the silent era to 1969, a year after which Scorsese began his feature career. He said, "I wouldn't feel right commenting on myself or my contemporaries." In the four-hour documentary, Scorsese lists the four aspects of the director he believes are the most important as (1) the director as storyteller; (2) the director as an illusionist: D. W. Griffith or F. W. Murnau, who created new editing techniques among other innovations that made the appearance of sound and color possible later on; (3) the director as a smuggler—filmmakers such as Douglas Sirk, Samuel Fuller, and Vincente Minnelli, who used to hide subversive messages in their films; and (4) the director as iconoclast. In the preface to this documentary, Scorsese states his commitment to the "Director's Dilemma", in which a successful contemporary director must be pragmatic about the realities of getting financing for films of personal esthetic interest by accepting the need of "making one film for the studio, and (then) making one for oneself."