The author contends that many traits commonly judged as female faults are rooted in vital, life-affirming instincts and have been distorted by industrialization, commercialization, and social mal-adaptation. He introduces a distinction between positive and negative types of women, linking tonality and vitality to sexual behavior, virginity, and temperament, and examines the implications for marriage, divorce, and spinsterhood. The argument defends certain robust or traditionally masculine feminine qualities while rejecting simplistic idealization, and it closes by surveying women’s roles and prospects in art, philosophy, and science and urging social arrangements and guidance rather than erasure of natural differences.