Adhering to moral cognitive creed,opposing moral non-cognitive creed and skepticism,sticking to universalism and going against relativism are the brilliant standpoints of Habermas discourse ethics.

From the perspective of discourse ethics put forward by German philosopher Jüergen Habermas,Ondaatje\'s implied notion of justice in the novel can be seen clearly.

With no emphasis on how to establish sets of moral principles and rules,meta-ethics seeks to analyze the moral concepts and moral judgments already made by normative ethics with conceptual,logical and linguistic analysis.

Based on the classification of meta-ethics; primary problems of the meta-ethics, the topic for the research is to discuss the dual ethical method of Stevenson's Emotivism, especially, its features and important roles in transition in west modern ethics.

As the founder of western modern meta-ethics,G.

What is more important is that, without theoretical concepts and frames provided by metaethics, we cannot explore some normative questions or issues with efficiency and depth.

And analytical philosophy reduced ethics to metaethics, which concentrated on logical and linguistic analysis of moral discourse but ignored the moral practice of the society.

Stevenson is a recognized leading representative of emotivism in metaethics, who have done great contribution to the development of metaethics.

The well-known ethicist Habermas put forth a discourse ethics, proposing that communication is actually negotiated relations among people by the mediation of languages.

Harbermas discourse ethics has discourse as its base,the Principle of Universalization and the Principle of Dis- course as its core.