最好的投资方式是观察现实世界中正在发生的事情，并据此投资。

You must be the best judge of your own happiness.

"The only real elegance is in the mind; if you've got that, the rest really comes from it."

理解就是发明。

把爱放大

"Caring too much for objects can destroy you. Only—if you care for a thing enough, it takes on a life of its own, doesn’t it? And isn’t the whole point of things—beautiful things—that they connect you to some larger beauty?"

States are rational actors that seek to maximize their relative power in order to ensure their survival in a competitive international system.