Book 7: 《述而》 Shu Er (Transmission)
《述而》 Passage 7.22
子曰：「三人行，必有我師焉。擇其善者而從之，其不善者而改之。」
Legge Translation (1861)
The Master said: "When I walk along with two others, they may serve me as my teachers. I will select their good qualities and follow them, their bad qualities and avoid them."