知人者智，自知者明；勝人者有力，自勝者強。Knowing others is intelligence; knowing yourself is true wisdom. Mastering others is strength; mastering yourself is true power.

知人者智，自知者明；勝人者有力，自勝者強。

Knowing others is intelligence; knowing yourself is true wisdom. Mastering others is strength; mastering yourself is true power.

老子

中國春秋時代思想家

姓李名耳，字聃。中國春秋時代思想家，著作被奉為《道德經》，是道家的經典之一。他的學説後被莊周、楊朱等人發展，後人奉為道家學派之宗師，與儒家的孔子相比擬。