Vita Sexualis: Karl Ulrichs and the Origins of Sexual Science

Karl Ulrichs's studies of sexual diversity galvanized the burgeoning field of sexual science in the nineteenth century. But in the years since, his groundbreaking activism has overshadowed his scholarly achievements. Ulrichs publicly defied Prussian law to agitate for gay equality and marriage, and founded the world's first organization dedicated to the legal and social emancipation of homosexuals. Ralph M. Leck returns Ulrichs to his place as the inventor of the science of sexual heterogen...