The art of living is to know when to hold fast and when to let go.
生活的艺术在于懂得何时坚持,何时放手。
不要走在我后面;我可能不会引领。不要走在我前面;我可能不会跟随。只要走在我旁边,做我的朋友。
The most important skill for an economist is the ability to think clearly about trade-offs.