子语鲁大师乐，曰：“乐其可知也：始作，翕如也；从之，纯如也，皦如也，绎如也，以成。”
1The Master instructing the grand music-master of Lu said, 'How to play music may be known. At the commencement of the piece, all the parts should sound together. As it proceeds, they should be in harmony while severally distinct and flowing without break, and thus on to the conclusion.'