物以类聚，人以群分。如何处理公与私的关系，是检验一个人品位的分水岭和试金石，我据此把人分为六类：“大公无私是伟人，先公后私是能人，公私兼顾是智人，先私后公是常人，损公肥私是小人，公私不分是坏人”，主张要“学习伟人，争当能人，起用智人，帮助常人，教育小人， Birds of a feather flock together. How to deal with public-private relations is a watershed and touchstone for testing a person’s taste. I classify people into six categories according to this: “The unselfishness is a great person, the first person is a capable person, the public and private person is a wise person, and the first is private. The public is an ordinary person, and the public is the villain. Public and private is not a bad person.” He advocates “learning a great man, fighting for a capable person, using an wise man, helping an ordinary person, and educating a small person.”