What is the relationship between culture and mental health? Is mental illness universal? Are symptoms of mental disorders different across social groups? In the late 1960s these questions gave rise to a groundbreaking series of articles written by the psychiatrist Henri Ellenberger, who would go on to publish The Discovery of the Unconscious: The History and Evolution of Dynamic Psychiatry in 1970. Fifty years later they are presented for the first time in English translation, introduced by historian of science Emmanuel Delille. Ethnopsychiatry explores one of the most controversial subjects in psychiatric research: the role of culture in mental health. In his articles Ellenberger addressed the complex clinical and theoretical problems of cultural specificity in mental illness, collective psychoses, differentiations within cultural groups, and biocultural interactions. He was especially attuned to the correlations between rapid cultural transformations in postwar society,