The attitude of Communists towards any person who has made mistakes in his work should be one of persuasion in order to help him change and start afresh and not one of exclusion, unless he is incorrigible.
Mao ZedongWho are our enemies? Who are our friends? This is a question of the first importance for the revolution.
Mao ZedongKnowledge is a matter of science and no dishonesty or conceit whatsoever is permissible. What is required is definitely the reverse - honesty and modesty.
Mao Zedong