Contemporary discourse in biomedical ethics has been greatly shaped, sustained and enriched through the insights and perspectives offered by its theologian-contributors. This volume examines the work of four Christian theologians who have significantly influenced the field of bioethics in the U.S.: Richard McCormick, SJ; Paul Ramsey; Stanley Hauerwas; and James M. Gustafson. Each theorist's writings are explored in turn, in order to elucidate, compare and contrast their foundational theological premises, their particular approaches to moral reasoning, and their considered responses to selected medico-moral issues.The final chapter reflects some of the author's own critical responses in dialogue with the study's four subjects, and offers general suggestions about the moral perspective afforded by Christian theology. This volume should be of interest both to those seeking a fuller understanding of contemporary discussions in bioethics and to those studying Christian ethics in the modern era.