To be successful, you really have to put your ego in the background and try to be diplomatic to achieve what you want to achieve.

I'm an incurable romantic, and 'Casablanca''s one of the most romantic pictures I've ever seen - the combination of Bogart and Bergman is just magical.

With Kubrick and most film directors, they are in complete control, but one can influence them.

The Berlin of the '20s formed the foundation of my future education... the Berlin of the UFA studios, of Fritz Lang, Lubitsch and Erich Pommer. The Berlin of the architects Gropius, Mendelsohn and Mies van der Rohe. The Berlin of the painters Max Libermann, Grosz, Otto Dix, Klee and Kandinsky.

I have never been sorry to see my sets being struck, provided they are well photographed. They're not works of art but part of making a film.

Remember, the early '60s in London was something - which must have been like Berlin in the '30s when the arts flourished. You didn't have the differences in class, and so on.

The cinema is there to heighten the imagination; I have always tried to make sure it does so.