Otherwise, if you ask them to pay more at the end, then a lot of people won't have the money.

不然,如果你向他们在最后索要更多的还款,很多人都不会有那么多钱

耶鲁公开课 - 金融市场课程节选

If you don't pay people, they are more committed to the cause.

如果你不付钱给这些人，他们就对竞选更加投入。

耶鲁公开课 - 心理学导论课程节选