《南史·列传·卷四十八》
如果以文章的音韵，同于乐器的声曲，美恶妍丑，不能互相违背，譬如子野奏曲，怎么会忽然出现和缓失调的声音。
若以文章之音韵，同弦管之声曲，美恶妍蚩，不得顿相乖反，譬犹子野操曲，安得忽有阐缓失调之声。
If the sounds of an article are like the musical pitches of instruments, and if beauty and ugliness, good and bad cannot deviate from one another, then playing music as well as Zǐyě did would not suddenly result in tones that are gentle and out of tune.