The great powers are always searching for opportunities to gain power at the expense of their rivals, and they will use force if they believe it will bring them strategic advantage.

言语有力量，但沉默可能更有力量。

If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.

经济学方法为理解所有人类行为提供了一个有价值的统一框架。

You are the artist of your own life. Don't hand the paintbrush to anyone else.