"Life is what happens when you're busy making other plans."

The essence of strategy is choosing what not to do.

"We are all products of our time, for better or worse."

The ultimate test of any economic theory is whether it improves real-world decisions.

责怪小人为颠倒豪杰之士，而不知只有颠倒的人才是小人。可怜君子受世事折磨，而不知只有在折磨之中才能见到君子。