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

Adam, by tasting the apple, came into a knowledge of good, and he was only able to know this good by means of the experience of the knowledge of evil.

亚当吃了苹果，遇到了善，他只有辨别善的能力,因为他经历了恶。

耶鲁公开课 - 弥尔顿课程节选

People have names. People have distinct, individual names that mark them as people and once you know somebody's name you are less likely to do bad things to them.

人都有各具个性的名字,这标志他们的人性,一旦你知道某个人的名字,你对他行恶的可能性就会降低。

耶鲁公开课 - 心理学导论课程节选

Now since God is himself the transcendent source of all being and since he is good, in a monotheistic system there are no evil agents that constitute a realm that opposes God as an equal rival.

因为上帝的力量超越万物,也因为他是上帝，在一神论体系中没有恶灵,能够形成一个可与他相抗衡的领域。

耶鲁公开课 - 旧约导论课程节选