Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.

Don’t worry about others not understanding you. Worry about you not understanding others.

挑战让生活有趣，而克服挑战让生活有意义。

简单是设计中最极致的复杂。

海洋保护区不是限制，而是对我们渔业未来的投资。