Ecology has become a religious concern, but its religious significance remains ambivalent, and politically it is open to exploitation by the right and the left. An ecological ethic needs to be related to the justice tradition with its correlative concepts of rights and responsibilities as these apply to “nature,” but it also needs an interreligious foundation. Buddhism and Christianity are able to make complementary contributions toward formulating an ecological ethic. “Justice” in the West has both biblical and Roman origins, but the Western concept of ius may also be correlated with the Indian concept of dharma as universal harmony and order. Justice may also be placed in the larger context of an ethic of care based on disinterested love of all beings and the transcendence of conflict. The concept of responsibility, however, remains central to the formulation of an ecological ethic and poses specific, though complementary, challenges to both Buddhist and Christian traditions.