Abstract: The substance of modern western moral crisis is the conflict between moral individualism and moral consensus. How to resolve this contradiction has got to the core of the project to the modern western moral crisis. As a reply, the new and old Liberalism and Communitarianism of west have given answers with some representativeness. However, this article holds that in order to settle the problem,one must turn to Marx's practical philosophy. From Marx's view, the conflict between moral individualism and moral consensus stems from contradictions of the biological ontology of human being, which can only be resolved in the processes of practical activity. Therefore, a way of practical philosophy is a real one to resolve the modern western moral crisis.

Key words: Marx, practice, ethical foundation

摘要： 现代西方伦理危机的实质是道德个体主义与道德共识的冲突。如何解决这一矛盾已成为解决现代西方伦理危机的核心课题。对此,西方新旧自由主义和共同体主义都给出了较具代表性的回答。然而,要真正解决问题还应到马克思的实践哲学中寻找答案。在马克思实践哲学的视域内,道德个体主义与道德共识的冲突源于人本体论存在的矛盾,这种矛盾只有在现实的实践活动中才能解决。所以,实践哲学进路是解决现代西方伦理危机的现实之路.

关键词: 马克思, 实践, 伦理基础