The condition of our whole existence is but to struggle with evil, to compare them, to choose between them, evils that is, and so far as we can to mitigate them.

我们整个生活状况,就是在与邪恶相斗争中,不断地比较和选择,然后决定什么是邪恶,这样我们才能消除邪恶

耶鲁公开课 - 美国内战与重建课程节选