张仲景：伤寒论·第391则

賢良曰：「匈奴處沙漠之中，生不食之地，天所賤而棄之，無壇宇之居，男女之別，以廣野為閭里，以穹廬為家室，衣皮蒙毛，食肉飲血，會市行，牧豎居，如中國之麋鹿耳。好事之臣，求其義，責之禮，使中國干戈至今未息，萬里設備，此兔罝之所刺，故小人非公侯腹心幹城也。」

用賞者貴誠，用刑者貴必。刑賞信必於耳目之所見，則其所不見，莫不闇化矣。誠暢乎天地，通於神明，見姦僞也。

What are the models? Well, the first rule is that you've got to have multiple models—because if you just have one or two that you're using, the nature of human psychology is such that you'll torture reality so that it…