Can human life and human liberty both be defended? In this fully revised fourth edition, Dr. John M. Cobin argues that they must be - and shows how. Starting from the personhood of the unborn child, he builds a pro-life argument grounded in the libertarian non-aggression principle and the Christian tradition of natural rights, reinforced by the economics of market failure. Written for a post-Roe world, it addresses the Dobbs decision (2022) and answers objections raised from within the liberty movement itself.