David Boonin, a philosopher at the University of Colorado, makes a striking argument: even granting that fetuses are persons with full rights to life from conception, abortion should remain legal. Boonin accepts the pro-life premise that has been central to abortion debates and shows that it does not lead where opponents of abortion think it does. His argument draws on the philosopher Judith Jarvis Thomson's famous violinist thought experiment while extending it in new directions and responding to decades of criticism. Boonin argues that having a right to life does not give a person the right to use another person's body without consent, even when that use is necessary for survival. He examines the claim that pregnancy differs from Thomson's violinist because the pregnant woman is responsible for the fetus's dependence, arguing that responsibility does not ground an obligation to provide bodily support. The book engages carefully and respectfully with pro-life arguments, seeking not to dismiss but to meet them on their strongest grounds. Readers who oppose abortion will find their best arguments addressed seriously; readers who support abortion rights will find new resources for their position. This philosophical analysis will not end the abortion debate, but it challenges both sides to think more carefully about what rights actually require.