It is an odd and unnatural view and I don't actually expect people to believe it at first.

这是个古怪又反常的观点,我并不奢望大家在一开始,就能接受这个观点

耶鲁公开课 - 心理学导论课程节选

Freud had this wonderful phrase, "polymorphous perversity," this pure desire for pleasure.

弗洛伊德美其名曰“多形性反常“,即追求纯粹的快乐。

耶鲁公开课 - 心理学导论课程节选