CHILÖ, one of the Seven Sages of Greece, and one of the ephori of Sparta, the place of his birth, flourished B.C. 590. He was accustomed to say that three things were very difficult—to keep a secret, to know how best to employ time, and to suffer injuries without murmuring. According to Pliny, it was he who caused the short sentence "Know thyself" to be inscribed in letters of gold on the temple of Delphi. It is said that he died of joy while embracing his son, who had been crowned as victor at the Olympic games. The institution of the ephorality has by some been ascribed erroneously to this sage.