最大的智慧是认识到自己的无知。

The most important political distinction among countries concerns not their form of government but their degree of government.

Our ideas of what we believe to be， are not of what they are， but only of what they seem to be.

Don't let yesterday take up too much of today.

如果你不疯狂，你就不是真正的天才。

质量不是一种行为，而是一种习惯。

Collaboration is key—governments, businesses, and communities must work together for sustainable forests.