Liberating sex, knowing desire: "scientia sexualis"and epistemic turning points in the history of sexuality.

This study considers the role of epistemic turning points in the historiography of sexuality. Disentangling the historical complexity of "scientia sexualis," I argue that the late 19th century and the mid-20th century constitute two critical epistemic junctures in the genealogy of sexual liberation, as the notion of free love slowly gave way to the idea of sexual freedom in modern western society. I also explore the value of the Foucauldian approach for the study of the history of sexuality in non-western contexts. Drawing on examples from Republican China (1912-49), I propose that the Foucauldian insight concerning the emergence of a "homosexual identity" in the West can serve as a useful guide for thinking about similar issues in the history of sexuality and the historical epistemology of sexology in modern East Asia.