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As a screenwriter, Guattari made significant contributions to the field of film. He collaborated with directors such as Jean-Luc Godard and Peter Wollen, bringing his unique perspective on philosophy, psychoanalysis, and social theory to the cinematic medium. Guattari's screenwriting explored themes of subjectivity, desire, and the relationship between language and power, pushing the boundaries of traditional filmmaking and influencing the development of experimental and political cinema.