The second, the abolition of the family, and the third wave being the establishment of the philosopher kings.

第二波，不要家庭；,第三波,设立哲学家国王。

耶鲁公开课 - 政治哲学导论课程节选

Then you get successively deeper, II through IV, slow, irregular, high amplitude delta waves, and then once you reach stage IV you start going up again, up through stage III and II.

然后睡得越来越深，从第二到第四阶段，慢，不规则，高振幅的δ波，等你到达第四阶段，你又开始返回，第三阶段和第二阶段。

耶鲁公开课 - 心理学导论课程节选