三人行,則必有我師 [ㄙㄢ ㄖㄣˊ ㄒㄧㄥˊ , ㄗㄜˊ ㄅㄧˋ ㄧㄡˇ ㄨㄛˇ ㄕ; san1 ren2 xing2 , ze2 bi4 you3 wo3 shi1] If three walk together, one of them can teach me sth (Confucius) ◄ ►