PART I: EARLY YEARS AND CULTURAL CONTEXT * Hirschfeld's University Years, Early Travels and Encounters with the Literary World * Urban Culture and Homosexuality * Jewish Identity and Medicine * PART II: EVOLUTION OF HIRSCHFELD'S SCIENTIFIC OUTLOOK * Research Methods and Philosophy * Hirschfeld and the Importance of Sexology * The Third Sex Theory and its Cultural and Scientific Reception * Sexual Intermediacy and Transvestitism * Hirschfeld and Psychoanalysis * Hirschfeld and Degeneracy * Hirschfeld as a Clinician * PART III: POLITICS, ACTIVISM, AND WAR * Hirschfeld, the Social Democrats and Wilhelmine Sexual Politics * Homosexuality and the Politics of Effeminacy in Wilhelmine Germany: The "Liebenberg" Affair * Misogyny and the Anti-feminist Substrate of Homophobia * Hirschfeld and the Women's Movement * Hirschfeld and WWI * The Weimar Years * The Ernst Röhm Affair * PART IV: PANHUMANISTIC COSMOPOLITANISM, EXILE AND FINAL YEARS * World Voyage and Sexual Ethnography * Jewish Identity and Race Discourse * Exile and Final Years * Epilogue