If somebody offers you an amazing opportunity but you are not sure you can do it, say yes – then learn how to do it later!

Acting is about finding the truth in the imaginary circumstances.

Sustainable forestry is not an option; it's an obligation.

要这样行动，使得你意志的准则任何时候都能同时被看作一个普遍立法的原则。

创造力不仅仅是关于想法，而是关于实现它们。