The earth experiences he says certain periodic destructions and cataclysms civilizations are reduced to barbarism only to recover and grow again.

他说，世界不断经历,阶段性的摧残及剧变,文明虽被降格至野蛮,但终究会复原并再次茁壮。

耶鲁公开课 - 政治哲学导论课程节选

Because of Western civilization's emergence as the exemplary civilization, it also presents problems to the whole world.

虽然西方文明的崛起,作为现代文明的模板,但是它也反映出了世界范围内的现存问题

耶鲁公开课 - 古希腊历史简介课程节选

Something must have led him to explore strange new worlds, to seek out new civilizations and to boldly go where no man had gone before.

某种东西让他探索新的未知世界，探索新的文明,大胆地到没人去过的地方。

耶鲁公开课 - 心理学导论课程节选

People who have never known of civil society; people who have never known of a world with polis, well, of course,they would do something stupid like that.

希腊人认为不知道文明社会的人,也不会知道城邦的世界,所以才会做出如此愚蠢的行为

耶鲁公开课 - 古希腊历史简介课程节选

The reason for that I think is that the early times in which these civilizations arose saw all kinds of dangers coming, and the most--the swiftest, the least suspected, the one that could come upon you overnight came from the sea.

在我看来原因是,在这些文明所诞生的早期世界危机四伏,而来的最迅速,最难以预测,最可能,一夜之间骤然降临的灾难,正来自于海上

耶鲁公开课 - 古希腊历史简介课程节选