The barriers to unity presented by European geography and very limited technology made it hard for a would-be conqueror to create a vast empire, eliminating competitors and imposing his will over vast areas.

由于欧洲独特的地理条件,和当时有限的科技水平,使未来的征伐者很难建立一个广袤的帝国,清除异己和使他的意志,传播到广袤领地的每一个角落

耶鲁公开课 - 古希腊历史简介课程节选

It should not be limited or constrained by any transcendent standards or moral laws that do not derive from politics itself, whether a law of God or some kind of transcendent moral order or code.

它不可以被任何超验的准则或道德条律所,限制和束缚，因为那些并非源自于,政治本身，无论那是上帝的法则，还是,某种超验的道德命令或准则。

耶鲁公开课 - 政治哲学导论课程节选