 One day, Martin Landau (qv) noticed that  Alfred Hitchcock (I) (qv) was giving instructions to  Cary Grant (qv), James Mason (I) (qv) and  Eva Marie Saint (qv). When he asked Hitchcock about this, the  director basically said if he didnt talk to actors, they were doing  fine; when he talked to them, it was because they did something  wrong.