[三人行,必有我师 / 三人行,必有我師, sān rén xíng, bì yǒu wǒ shīㄙㄢ ㄖㄣˊ ㄒㄧㄥˊ, ㄅㄧˋ ㄧㄡˇ ㄨㄛˇ ㄕ] lit. If three walk together, one should be my teacher (成语 saw, from Confucian analects). You have sth to learn from everyone.; also translated as: If three of us walk together, at least one of the other two is good enough to be my teacher.