三人行,必有我師 [ㄙㄢ ㄖㄣˊ ㄒㄧㄥˊ , ㄅㄧˋ ㄧㄡˇ ㄨㄛˇ ㄕ; san1 ren2 xing2 , bi4 you3 wo3 shi1] lit. if three walk together, one can be my teacher (idiom, from the Analects of Confucius) you have sth to learn from everyone ◄ ►