Religion is for the liberation of human suffering, but religious wars were very often some of the most cruel and bloody ones. This paradox is the one we have to face and eradicate for ever. Global ethic is an attempt to solve this paradox. Understand of the paradox is the necessary first step to its solution. Professor Chun-I Tang argues that it is mainly due to the fact that religious heretic is usually regarded as devil. He proposes that if religion could value the subject of practice and the individual life is the baseline of moral action, we may hope to dissolve all sorts of religious wars.Since every religion provides a moral code for normal living, we would have a common set of middle principles which would be a way for the settlement of religious difference and oppositions and would let religions live peacefully together. Hence, to solve the paradox of religious wars, we need to build a common world ethic and promote inter-religious dialogues. This paper examines the contribution of reflections on global ethic by Hans Kung, Leonard Swidler and Shu-hsien Liu as well as their limitations. Finally, this paper tries to show how a kind of intra-dialogue between religions could take place to overcome the abyss of difference and an initial dialogue between Confucianism and Buddhism is taken as a paradigm case for example.