《孔子家语·贤君》
哀公说： 我听说他的家中男女长幼都是一样没有分别，而您把他说成贤人，这是什么原因呢？ 
公曰： 吾闻其闺门之内无别，而子次之贤，何也？ 
"I have heard," said Duke Ai, "that in his palace men and women, old and young, are all on an equality, and that you, Master, call him a sage. How is this?"