The true value of a forest cannot be measured in board feet alone.

Let us try to teach generosity and altruism, because we are born selfish.

Sometimes it's the people no one imagines anything of who do the things that no one can imagine.

Pain is temporary. Quitting lasts forever.

We must be realistic about the pace of change. The world will need oil and gas for decades to come, even as we invest in lower-carbon solutions.

I'm the reason your fire won't burn.

The most dangerous poison is the feeling of achievement. The antidote is to think like a beginner every morning.

自由的功能是解放他人。

快乐有益于身体，但悲伤才能发展心灵的力量。

【译文】 孔子说：“唯女子与小人难以对付。太亲近了，他们就会失礼；太疏远了，他们就会怨恨。”