《礼记·冠义》
所以说，只有行过冠礼以后才算服装齐备，服装齐备以后才能做到举止得体、态度端庄、言谈恭顺。
故冠而后服备，服备而后容体正、颜色齐、辞令顺。
Therefore, it is said that one is well-dressed only after performing the capping ceremony, and with complete clothes one can behave with propriety, be dignified in attitude and speak submissively.