真相很少是简单的，而且往往比我们对自己说的谎言更痛苦。

Courtesy costs nothing. Lower the toilet seat after use. Let the people in the elevator exit before you enter. Return shopping carts to their designated areas. When you borrow something， return it better shape (filled up， cleaned) than when you got it.

数字世界的货币是信任。

能源转型不仅仅是更换燃料，而是转变整个系统和思维方式。