折疑論 4.34

4.34

子之信道未篤。故多惑志。吾安敢以大聖微旨答子之問耶。昔公明儀為牛彈清角之操（清角者牛耳。不能聞聲。唯以角聽。故云彈清角之操也）。

Your faith in the Way is not yet staunch, which is why your mind has so many doubts. How could I dare answer your questions with the profound intentions of the Great Sage? Of old, when Gongming Yi played the melody of the 'Clear Horn' to a cow (the 'Clear Horn' refers to a cow's ears; it cannot hear sounds and listens only with its horns, hence it is said to play the melody of the 'Clear Horn'),