Positive psychology is not a luxury; it is a necessity for a life well-lived.
积极心理学不是一种奢侈品；它是美好生活的必需品。
幸せとは、自分が幸せだと思える瞬間を大切にすることだ。
The pursuit of mathematical truth is a deeply personal and profoundly universal endeavor.
Writing is the only thing I've ever done with persistence, except for being married.
读书最要紧的就是勤学好问，做人最要紧的就是实实在在而持之以恒。
