Perhaps my readers are wondering what this digression into high politics really has to do with the love-life of nations. More than appears. The feeling of freedom which is determined biologically and deeply anchored in the souls of mankind, extends first to personal individuality, then directly to sex and the sexual influence on a person as embodied in the family, and thirdly, in the families bound closely together through marriage, language, the home and many common living conditions. By comprehending such factors as these we can come to some accurate conception of the nation. 1In late 1931, German sexologist and gay-rights activist Magnus Hirschfeld, quoted above, visited Palestine for a lecture tour that attracted hundreds in Tel Aviv, Jerusalem, Haifa, and kibbutz Beit Alfa. By this time, the Jewish settlers' community (or Yishuv) in Mandate Palestine had already been exposed to the science of sexology and to the reform movement it inspired. Sexual-hygiene manuals had been translated into Hebrew and Yiddish in both Tel Aviv and Warsaw. Hebrew readers had access, for example, to translations of Auguste Forel's Sexual Ethics and Max Hodann's A Boy and a Girl. Finally, in the fall and winter of 1931-32, three sex consultation centers were opened in Tel Aviv.This article focuses on the assimilation of sexology and sexual reform in the Yishuv of the 1930s. In this period, German welfare and health systems, as well as Bolshevik projects to remodel the normative family, provided potent manifestations of the abilities of medicine and law to reform family and sexual life. Beyond these specific sites, reform of sexual life was an international, even transnational, movement. Recent studies demonstrate how ideas and practices were disseminated across national borders. Most of these studies, however, focus on Europe. 2 This article explores the assimilation of sexology in the Yishuv, first, as a case study for cross-national transmission of practices and ideas. Men and women of various nationalities traveled across the world to study with, lecture for, and meet other prominent activists and physicians. Translated books and articles informed laypersons across the globe, who debated concepts of eugenics and reformed family life, and ideas and institutions from one social milieu were re-created in new environments. Thus, I examine Liat Kozma is a Lecturer in the