during the production and later published in both French and English (in Cahiers du Cinéma in English). In this diary, he called Fahrenheit 451 his "saddest and most difficult" film-making experience, mainly because of intense conflicts between Werner and himself. The film was Universal Pictures' first European production. Julie Christie was originally cast as just Linda Montag, not both Linda and Clarisse. The part of Clarisse was offered to Jean Seberg and Jane Fonda. After much thought, Truffaut decided that the characters should not have a villain/hero relationship but rather be two sides of the same coin and cast Christie in both roles, although the idea came from the producer, Lewis M. Allen. In an interview from 1998, Charles Aznavour said that he was Truffaut's first choice to play the role given to Werner; Aznavour said that Jean-Paul Belmondo was the director's second choice, but the producers refused on the grounds that both of them were not familiar enough for the English-speaking audience. Paul Newman, Peter O'Toole and Montgomery Clift were also considered for the role of Montag; Terence Stamp was cast but dropped out when he feared being overshadowed by Christie's dual roles in the film. Laurence Olivier, Michael Redgrave and Sterling Hayden were considered for the role of the Captain, before Cyril Cusack was cast. Filming The film was shot at Pinewood Studios in England, with the monorail exterior scene taken at the French SAFEGE test track in Châteauneuf-sur-Loire near Orléans, France (since dismantled). The film featured the Alton housing estate in Roehampton, south London, and also Edgcumbe Park in Crowthorne, Berkshire. The final scene with the "Book People" reciting their chosen books was filmed at Black Park near Pinewood, in a rare and unexpected snowstorm that occurred on Julie Christie's birthday, 14 April 1966. The production work was done in French, as Truffaut spoke virtually no English but co-wrote the screenplay with Jean-Louis Richard. Truffaut expressed disappointment with the often stilted and unnatural English-language dialogue. He was much happier with the version that was dubbed into French. The movie's opening credits are spoken rather than displayed in type, which might be the director's hint of what life would be like in an illiterate culture. Tony Walton did costumes and production design, while Syd Cain did art direction. In 1971, some scenes from Fahrenheit 451 were used in The Different Ones, an episode of Rod Serling's Night Gallery