And the crucial point about the case is that we stipulate that at no point was there a dramatic change.

这个案例的关键就在于,我们推断生命不可能会有戏剧化的剧变。

耶鲁公开课 - 死亡课程节选

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