She is the author of several books, including Reasonable Creatures: Essays on Women and Feminism (Vintage, 1995) and Subject to Debate: Sense and Dissents on Women, Politics, and Culture (Random House, 2001). Throughout her career, she has been an articulate and vociferous champion of those who are disenfranchised and oppressed throughout the world. She has been one of the foremost spokespersons for feminism and reproductive rights. She has also expressed skepticism regarding religious dogma, and has frequently criticized religious leaders for using their influence to repress freedom, particularly as it relates to women.