有教无类。In teaching there should be no distinction of classes.当仁，不让于师。When it comes to benevolence, one need not give precedence even to his teacher.学而时习之，不亦说乎？ Is it not pleasant to learn with a constant perseverance and application?温故而知新，可以为师矣。If a man keeps cherishing his old knowledge, so as continually to be acquiring new, he may be a teacher of others.学而不思则罔，思而不学则殆。Learning without thought is labour lost; thought without learning is perilous.敏而好学，不耻下问。He was of an active nature and
