Camelot is a 1967 American musical drama film directed by Joshua Logan and starring Richard Harris as King Arthur, Vanessa Redgrave as Guenevere, and Franco Nero as Lancelot. The film is an adaptation of the homonymous musical by Alan Jay Lerner and Frederick Loewe. Lerner also wrote the screenplay. Wikipedia
King Arthur as a Boy: What's the best thing for being sad?
Merlyn: The best thing for being sad is to learn something.