筹划洋人的事情一定要先了解洋人的情况，要了解洋人的情况一定知道洋人的情况。

All changes, even the most longed for, have their melancholy; for what we leave behind us is a part of ourselves; we must die to one life before we can enter into another.

It's simple, you just take something and do something to it, and then do something else.

The most powerful tool for change is knowledge, rigorously pursued and widely shared.

我不是国王，我不是神，我只是一个试图理解这个世界的人。