How to gain, how to keep, how to recover happiness, is in fact for most men at all times the secret motive of all they do, and all they are willing to endure."

如何获得，如何保持，如何重获快乐，是多数人时刻怀有的秘密动机，是他们愿意忍受一切的目的“

哈佛公开课 - 幸福课课程节选

The next day in class, I used that and I said to the students, "You know, the last thing in the world that I want you to think is that I experience a constant high or that you, by the end of the semester or the year-- it was a year course, you-- by the end of the year-- " will experience a constant high."

第二天上课时，我讲了这件事并对学生说，“我最不希望你们以为,我总是保持快乐，或者你们，在期未或学年未-,那门课程要讲一年，你们到学年未时-,会一直保持快乐“

哈佛公开课 - 幸福课课程节选