The first was in 1966 when he was at Chinese Culture College (now Chinese Culture University). He was dismissed for responding to a student's question about the February 28 incident. Later he went to National Taiwan University, where his services were discontinued when military police discovered a book by Marx in his student's house.
早在民國五十五年，他在文化學院（文化大學前身）任教時，因回答學生有關「二二八」的問題而被解聘；到台大，又因警總在其學生家中搜出馬克思著作，而遭傳訊，台大不續聘。