折疑論 3.5

3.5

服為三德之初（孝經云。非先王之法服不敢服。非先王之德行不敢行。非先王之法言不敢道。三德惟服最先。故曰初）。

Dress is the first of the Three Virtues; (The Classic of Filial Piety says: 'If it is not the standard dress of the former kings, one does not dare to wear it; if it is not the virtuous conduct of the former kings, one does not dare to practice it; if it is not the standard speech of the former kings, one does not dare to utter it.' Among the three virtues, dress comes first; hence it is called 'the first.')