In his 1994 A Sense of the Divine: The Natural Environment from a Theocentric Perspective, James M. Gustafson offered a long-awaited application of his theocentric ethics. In Intersections Gustafson continues to insist that theology and theological ethics must overlap with other, diverse fields of study -- particularly the hard sciences -- if they are to remain rich, vital, and relevant in the years ahead. With trademark clarity, he relentlessly pursues the fundamental questions of theological ethics: the nature of being human, what distinguishes us from other species, how our self-interest conflicts with our sympathy and concern for others, and the role of religious faith.After contrasting two interpretations of human nature -- one from theologian Reinhold Niebuhr, the other from biologist Melvin Konner -- Gustafson suggests four modes of moral discourse about medicine, then examines styles of religious reflection in medical ethics. Briefly sharpening his focus on genetic therapy, he movesto larger questions of human viability, concluding with a stirring call to scholars, clergy, and laypersons alike to engage in these intellectual intersections -- intersections that have, above all, supreme practical importance in our daily lives.