No man or woman is worth is worth your tears,and the one who is,won’t make you cry.

Good econometrics is like good carpentry—it's all about using the right tool for the job.

The past is a bucket of ashes.

出自《海国图志·卷首》。地气和天时变化了，那么历史的体例也应随着时代的变化而变化。

所谓仁人，只要能做到自己想成功时先帮别人成功，自己想得到时先帮别人得到，就可以了。推己及人，可算实行仁的方法。