唇云齿寒

IF THE LIPS ARE GONE THE TEETH WILL FEEL COLD

晋侯①复假道②于虞以伐虢(guó)。宫之奇谏曰:“虢,虞之表③也。虢亡,虞必从之。晋不可启,寇④不可酝⑤。一之谓甚,其可再乎?谚所谓‘辅车⑥相依,唇亡齿寒’者,其虞、虢之谓也。”公曰:“晋,吾宗也,岂害我哉?”