Don't have good ideas if you aren't willing to be responsible for them.

I'm not afraid to take a stand. Everybody come take my hand. We'll walk this road together, through the storm. Whatever weather, cold or warm.

Sustainability is not a choice, it's a necessity.

In dreams, you don't need to make any distinctions between things. Not at all. Boundaries don't exist. So in dreams there are hardly ever collisions.

经济学家需要三种伟大的智力才能：感知、想象和理性；而最重要的是他需要想象力。

科学是提出正确问题的艺术。