Bergman was a Swedish film and stage writer, director, and producer. He achieved an impressive degree of freedom early in his career and used it to create and develop a highly individual approach. Working with many of the same actors and technicians from film to film—including actor Max von Sydow and cinematographer Sven Nykvist—Bergman filled his work with an unusual degree of unity and continuity. He won international acclaim for The Seventh Seal and what other films? Discuss