Book excerpt: Drawing on the most important studies in psychology, human aggression, anthropology, and primatology, and on hundreds of original interviews conducted over a period of more than 20 years, this groundbreaking treatise urges women to look within and to consider other women realistically, ethically, and kindly and to forge bold and compassionate alliances. Without this necessary next step, women will never be liberated. Detailing how women's aggression may not take the same form as men's, this investigation reveals—through myths, plays, memoir, theories of revolutionary liberation movements, evolution, psychoanalysis, and childhood development—that girls and women are indeed aggressive, often indirectly and mainly toward one another. This fascinating work concludes by showing that women depend upon one another for emotional intimacy and bonding, and exclusionary and sexist behavior enforces female conformity and discourages independence and psychological growth.