预测蓬勃发展的积极情绪与消极情绪的比例约为3比1。高于这个比例，人们往往会蓬勃发展；低于这个比例，人们往往会萎靡不振。

The biggest risk in banking is not lending to bad borrowers, but borrowing from flighty lenders.

Economic theory provides the tools, but real-world testing refines them.

如果我们足够明智地正确开发，未来的粮食安全就在海浪之下。