Guattari contributed to a communist newspaper in Paris called "La Voie Communiste" ("The Communist Way") from 1955 to 1965. He was politically active in France throughout the 1960s, and he met his academic partner Gilles Deleuze through his political work. Together, they published the two-part work "Capitalism and Schizophrenia" in 1972 and 1980. They also wrote many other works, including "What is Philosophy?" (1991).