"They feel like the parties are so selfish they can't even work together."

VOA: standard.2010.07.29

If you're relentlessly selfish and calculating you would say, the chances that I decide the election are zero, so I'm just not going to bother.

如果你唯利是图,精于算计,你会说,我的投票能够决定选举的概率是零,所以我根本无需投票

耶鲁公开课 - 金融市场课程节选

so partially for selfish reasons, I want to go into some sort of social justice work,

所以，部分出于我个人的原因，将来我想从事社会公义方面的工作，

为了更美好的世界 - SpeakingMax英语口语达人