Ji Wenzi (季文子) was the posthumous title given to Jisun Xingfu (季孫行父), the most influential minister in Confucius’s home state of Lu (魯) between 600 and 568 BC. Ji was also the head of the the Jisun (季孫) clan, one of the notorious Three Families that ran the state in reality if not in name. Known for his austere lifestyle, he died 568 BC – over fifteen years before the birth of Confucius in 551 BC.
Appearances in the Analects of Confucius
Book 5, Chapter XX
Ji Wenzi always thought three times before taking action. When he heard this, Confucius said: “Twice is quite sufficient.”