The most altruistic behavior of all, giving your life to help another, can be explained in cold-blooded evolutionary terms.

最利他的行为，就是为他人牺牲自己，这也可以用毫无人情味的进化论来解释。

耶鲁公开课 - 心理学导论课程节选

It's the violence of this horrible act of self-sacrifice, this tragic act of self-sacrifice -- an act of self-sacrifice - intended obviously to preserve the state of virginity -- that grabs our attention and presumably grabbed Milton's.

正是这种可怖的自我牺牲行为的暴力，这种悲剧的自我牺牲--这种明显是,要保护童贞的自我牺牲的行为-,吸引了我们的注意力，大概也吸引了弥尔顿的注意力。

耶鲁公开课 - 弥尔顿课程节选

Some people argued that there are certain things that are just categorically wrong even if they bring about a good result, even if they saved five people at the cost of one life.

有些人认为,某些行为反正就是绝对错误的,即便该行为产生了好的结果，即便能牺牲一人挽救五人性命。

耶鲁公开课 - 公正课程节选