Facts do not speak for themselves. They speak for or against competing theories. Facts divorced from theories or visions are mere isolated curiosities.

I don't fear failure. I fear not trying.

If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.

负责任的林业不是限制进步，而是重新定义进步的含义。

Survival = Anger × Imagination.

Every act of communication is a kind of performance.

Success is a team effort; no one achieves greatness alone.