It's important to keep in mind always that what we do can be fun And never lose that sense of fun and enjoy exploring things I think being an engineer is partly just problem-solving and mind-set.

有一点非常重要,就是始终牢记我们所做的事情是令人愉快的,不要丧失了这种愉悦感,要享受探索的乐趣,我认为成为一名工程师从某种程度上来说,就意味着解决问题，提出创意。

普林斯顿公开课 - 领导能力简介课程节选

But it's really good. I'll probably keep doing Open Course Ware stuff like, for fun,

但是这很好。我可能会一直为了好玩上公开课，

开放式的课程？ - SpeakingMax英语口语达人