Pure cinema is complementary pieces of film put together, like notes of music make a melody. There are two primary uses of cutting or montage in film: montage to create ideas--and montage to create violence and emotions. — Alfred Hitchcock

Source

Bogdanovich, Peter (1963). "1963 Interview with Peter Bogdanovich". The Cinema of Alfred Hitchcock. Museum of Modern Art. Retrieved 2007-12-26.