"The wisdom of ignorance" is the virtue of knowledge that people must possess in the cognitive process.

As for the college s moral education,therefore,we should focus on such three aspects as moral cognition,moral will and moral conduct of college students.

College-students’ moral quality is composed of moral cognition, moral emotion and moral will.

To study undergraduates psychology of marriage and love, 538 students are surveyed and the results show that: (1) students have valued love more rationally; (2) students have their own standard of spouse selection, so their feelings are sincere and wholehearted; (3) many students have contradictions in the moral cognition of love.

To deepen moral understanding, identify with moral standards,define moral responsibility,strengthen consciousness and self-discipline,improve moral mechanisms,and so on are the effective ways for moral educational workers to train college students .

Bridge between perceptual and rational knowledge——On cognitive function of metaphor;

On perceptual and rational knowledge in art design teaching;

These include the rational knowledge currently available to defend human health, the historical responsibility we feel today, contemporary medical knowledge, close international cooperation, the new idea of opening information to the public, and the noble thoughts and feelings of medical workers for their patients.