Don't use bad words."

别说脏话"

耶鲁公开课 - 心理学导论课程节选

In other words, his point is that good is only possible because of the prior existence of bad.

换句话说，他的论点是,善存在的可能,仅在恶的事先存在。

耶鲁公开课 - 政治哲学导论课程节选

Thou marvell'st at my words, but hold thee still ; Things bad begun, make strong themselves by ill: So prythee go with me.

你听见我说话，却默不作声,坏事开始发生;,恶势力让他们更加壮大：,所以，跟我一起走吧。

耶鲁公开课 - 文学理论导论课程节选

In other words, this is an example of good and bad prejudice, right?

换句话说，这个例子里有好先见和坏先见，是吧？

耶鲁公开课 - 文学理论导论课程节选