He then was over fifty years old.He graduated from the sociology department of a famous university in the early 1940s.After graduation，he studied abroad for a few years and got his doctorate.After Liberation，he volunteered to return to his motherland to dedicate his knowledge and learning to the cause of education of the country.In the so called Cultural Revolution，he was wronged and unfairly treated.He was impelled to be separated from his wife and children.After the smash of the“ Gang of Four”，the people redressed his fabricated cases and rehabilitated him4.He was full of vigor again，and was wholly absorbed in teaching and research.He had got more than ten academic works published and had written numerous theses on sociology.In the eyes of the students，he was a scholar with genuine talent，but he was never self respecting and self styled5.
He was strict with us students，but he never lost temper in class，and I never saw him lose temper.His lecture was vivid，humorous and interesting.We all liked to attend his lectures.He instructed us to form opinions of our own and not to follow the crowd6 besides imparting knowledge to us.He volunteered to be the teacher in charge of our class.He had the ear of us as we all held great esteem for him.He was very responsible for the management of the class affairs though he was a prominent scholar.He was amiable and easy of approach.7 Besides，he took pleasure in helping others.He had never hesitated in helping his students generously with money when they were in difficulties.He once took the lead of the class in subscribing two hundred yuan to one of my classmates whose family had suffered from a flood.We admired not only his profound knowledge，but also his virtues.His son and daughter worked in distant places.We a few students sometimes went to his home and spent festivals with him，and he always gave us a warm welcome.Over 30 years gap didn't hinter our hearty communion.He told us some stories in his youth.When he was engaged in writing a book or setting up his theories，8 we would help him by copying some of his rough drafts.He was our helpful friend as well as good teacher.