长期而言，最严酷的大规模杀伤性武器是愚蠢。

后世的君主却不是这样，认为天下的利害大权都出于自己。

Don’t take it personally when someone turns you down. Assume they are like you: busy， occupied， distracted. Try again later. It’s amazing how often a second try works.

Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less than perfect conditions. So what. Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident and more and more successful.

生存还是毁灭，这是个问题。