《列子·黄帝》
出去后对列子说： 您的老师坐在那里心神恍惚，我无从给他看相，等他心神安定下来，我再给他看相。 
出而谓列子曰： 子之先生坐不齐，吾无得而相焉。
He went out and said to Liezi, "Your teacher is sitting there in a daze. I can't read his face. Wait until his mind settles down, and then I'll read his face." 