我不想仅仅以网球选手的身份被人所知。我想以好人的身份被人所知。

"We are all just passing through, leaving traces of ourselves behind like footprints in the sand."

"I find people confusing. This is for two main reasons. The first is that people do a lot of talking without using any words."

The only way to change behavior is through manipulation of reinforcement contingencies.

可持续性不是选择，而是能源行业的必然要求。#