可持续性不再是一个选择，而是一个商业必须。

Never let anyone tell you that you can’t do something.

A picture is a fact.

I must study politics and war that my sons may have liberty to study mathematics and philosophy.

本来该称赞的，却不称赞；不该称赞的，却高调唱着赞歌，这种人不会有仁爱之心。