I mean, I'm trying to do you a favor here by finding a use for your brain...

却以怨报德。

You've met lots of astronauts, and I've never grilled you about that. I'd thank you to extend me the same courtesy.

也不少宇航员 可从来都没是怎么的 谢谢以怨报德。

But if l am generous to someone who is my enemy, who is not the least bit interested in responding to me in kind, then l can be sure that l have truly willed his good and not my own.

但如果对以怨报德者也很慷慨，那绝对是出于他的、而非自己的益处。