People tend not to realize that the first question you should always ask yourself, is this really just something that's well-known in disguise?

已解决问题呢？,这是一个最短路径问题吗？,这是一个最近邻居问题吗？

麻省理工公开课 - 计算机科学及编程导论课程节选

You just have to ask yourself could this really be what ? personal identity is all about?

你只要问问自己,这有可能是,人格同一性吗？

耶鲁公开课 - 死亡课程节选