Progress happens when we stop blaming and start solving.

"We are all agreed that your theory is crazy. The question which divides us is whether it is crazy enough to have a chance of being correct."

可持续性必须有利可图，否则它就无法持续。

I don't have to be perfect. I just have to try my best.

没有祖国的人，就像没有歌声的夜莺。