《孟子·公孙丑章句上·第二节》
不理解对方的心思，就无法理解对方的意气，是可以的；不懂得对方的语言，就无法理解对方的心思，就不可以了。
不得于心，勿求于气，可；不得于言，勿求于心，不可。
It is possible to not understand the other party's thoughts and not understand the other party's spirit, but it is impossible not to understand the other party's language and not understand the other party's thoughts.