The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.
时间是最好的老师，但不幸的是，它杀死了所有的学生。
The study of the mind must be based on direct observation.
Silence can be as powerful as words, if you know how to listen.
It is not the task of history to judge, but to understand.