Zeng Shen (曾參), Master Zeng (曾子)
A younger follower of Confucius, called Master Zeng (曾子). Book 8 of the Analects describes his last illness.
Sayings on learning, friends and family
Confucius and his followers, Analects (Lunyu), in the Chinese text of James Legge, The Chinese Classics, vol. 1 (Oxford, 1893) · about 400 BCE (sayings of Confucius, who died in 479 BCE, collected after his death)
1.4
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。
Master Zeng said: Each day I examine myself on three points: Have I been disloyal when making plans for others? Have I been untrustworthy in dealing with friends? Have I failed to review what was handed down to me?