It is a good divine that follows his own instructions; I can easier teach twenty what were good to be done than to be one of the twenty to follow mine own teaching.
能遵行自己教诲的,才是好牧师;教二十个人该怎样做,比让我自己成为其中一个、照自己的教导去做,更容易。
— William Shakespeare · The Merchant of Venice · 1.2 —