Despite the pluralism of contemporary American culture, the Judaeo-Christian legacy still has a great deal of influence on the popular imagination. Thus it is not surprising that in this context atheism has a slightly scandalous ring, and unbelief is often associated with lack of morality and a meaningless existence. Distinguished philosopher and committed atheist Michael Martin sets out to refute this notion in this thorough defence of atheism as a both moral and meaningful philosophy of life. Martin shows not only that objective morality and a meaningful life are possible without belief in God but that the predominantly Christian world view of American society is seriously flawed as the basis of morality and meaning. This highly informed and sophisticated defence of atheism is a stimulating challenge to religious believers and a serious contribution to ethical theory.