The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.

I don’t have to prove anything to anyone. I only have to follow my heart and concentrate on what I want to say to the world. I run my world.

Sometimes the hardest thing and the right thing are the same.

Time is a concept that is derived from the way we perceive change.

永远不要在电话中回应恳求或提议。迫切性是一种伪装。

可持续发展不仅仅是种树，而是在正确的地方为了正确的理由种植正确的树。