To know the other and to establish a harmonious ethical relationship with it has been people's earnest wish since ancient times.This paper examines the differences between Aristotle's and Nussbaum's views on the specific relationship between morality and ethics,and argues that the concept of the perception is crucial for understanding the internal connection between morality and ethics,emphasizing the importance of truly perceiving others as a prerequisite for carrying out correct moral practice and restoring the mutualistic dialectical relationship between morality and ethics.Drawing on Merleau-Ponty's idea of the perception as a priori existence,and Raymond Williams'understanding of literature as a practice,the authors of this paper explore the inter-subjective ethical essence of reality and investigate the connotations of the edifying function of literature from the perspective of perception.Based on an analysis of the characteristics of realist writing,this paper points out that literary realism possesses positive educational values unrivaled by any other kinds of literature as it can truly reflect the changing relationships in reality and reveal the hidden existence of the real other.Viewing reality as a construction,Post-WWII literary realism adheres to the pursuit of truth and uses limited and constantly changing textual forms to emphasize the alterity of the other and to highlight the rich ethical potentials within reality.This helps readers recognize their own limitations and assume the ethical responsibility towards others.By virtue of the ethical writing principle of"search for truth means identification with good",realist literature serves as a guide for people to grasp the changing relationships in reality and to explore the possibilities of justice and good.