八交：1.胜己者；2.盛德者；3.趣味者；4.肯吃亏者；5.直言者； 6.志趣广大者；7.惠在当厄者；8.体人者。                                                                                                                                                                                                                                                

九不交：1.志不同者；2.谀人者；3.恩怨颠倒者；4.好占便宜者；5.全无性情者；6.不孝不悌者； 7.愚人者；8.落井下石者；9.德薄者。