The world is a stage, but the audience is dead.

When you get an invitation to do something in the future， ask yourself: would you accept this if it was scheduled for tomorrow？ Not too many promises will pass that immediacy filter.

Overfishing is like maxing out a credit card - the heavy price will come due eventually.

对人类行为的经济学方法并非其他方法的替代品，而是一种补充。