Chapter 3 discusses the philosophical foundation of the New Women’s theory of chastity by exploring Swedish feminist Ellen Key (1849–1926). Key was one of the major sources of influence for the New Women in the United States, Japan, and Korea, during the 1880s, 1910s and 1920s. Relying on Key’s writings, the New Women formulated their visions of women’s liberation and women’s rights in terms of marriage, sexuality, and love, as well as maternity and child-rearing. The chapter also discusses the transition in Iryŏp’s thought from a feminist activist to an existential thinker to better understand her existential reality by exercising what Iryŏp calls new individualism.