《孔子家语·七十二弟子解》
曾为季孙氏的家臣。做官时就处理政务，不做官时就在孔子门下学习。为人性情多谦逊退让。
仕为季氏宰，进则理其官职，退则受教圣师，为性多谦退。
He was a retainer of the Jizi clan. He handled government affairs when he was an official, and studied under Confucius when he was out of office. He was modest and yielding in character.