Zeng said: 三省吾身

" Everyday I examine my character in three respects, am I disloyal as my designs to others; am I untrustworthy in my dealing with friends; have I failed to practise what have been passed on to my professions." 曾子曰：吾日三省吾身：為人謀而不忠乎？與朋友交而不信乎？傳不習乎？