本文嘗試探討基督宗教與猶太教如何就可持續發展進行倫理性與實踐性的交談，並主張此一交談以培育對窮人與受苦大地的慷慨之德作為目標。本文首先在可持續發展的世界觀中指出宗教與生態的兩歧關連，繼而分別在猶太教與基督宗教的脈絡中討論某些固有的信仰要素何以阻礙了可持續社會的成形，並在此一基礎上去闡述這兩個宗教各自建構其可持續倫理的可能途徑，最後藉由對比的過程來突顯彼此的特殊性和相互豐富的可能性。

This article attempts to explore how Christianity and Judaism might engage in an ethical and practical dialogue on the issue of sustainable development; it proposes that the goal of this dialogue should be to cultivate a virtue of generosity in relation to the poor and the suffering earth. I first indicate that, in the worldview of sustainable development there exists a divergent relationship between religion and ecology. I then go on to discuss how some intrinsic elements of Christian and Judaic beliefs hinder the formation of a sustainable society. On the basis of this analysis, I elaborate on the possible approaches that the two religions might each take in constructing their own ethic of sustainability. Finally, through a process of comparison and contrast, I discuss the potential for the religious traditions to highlight the other’s strengths and mutually enrich one another as they develop ethics of sustainability.