《礼记·乐记》
所以，凡是懂得礼乐社会功能的人就能创作新的礼乐，而只是记住礼乐表现形式的人却只能复述旧的礼乐。
故知礼乐之情者能作，识礼乐之文者能述。
Therefore, anyone who understands the social function of etiquette and music can create new etiquette and music, while those who only remember the forms of etiquette and music can only repeat the old etiquette and music.