煤炭的真实成本必须既考虑其即时价值，也考虑其对社区和生态系统的长期影响。

Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.

There is something profoundly mysterious about quantum mechanics that we still don't understand.

Profit is not the legitimate purpose of business. The legitimate purpose of business is to provide a product or service that people need and do it so well that it's profitable.

The world is not run by those who are right. It is run by those who can convince others they are right.