"I do believe that I am going to make a difference to those guys that are coming to South Africa."

VOA: standard.2010.03.26

But whether or not you do so doesn't seem to make a big difference.

但不论你是否选择这样做,都不会有什么太大的影响

耶鲁公开课 - 心理学导论课程节选

Just want to do things on my own: Can I make a difference?

只想做自己的事，我能否实现改变？

哈佛公开课 - 幸福课课程节选