数学不是一项观赏性运动。

The best time to plant a tree was 20 years ago. The second best time is now.

I don't care about the past, I care about the future.

Economic inequality is not just a moral issue; it’s an economic one as well.

最大的财富是健康。

不要用耳朵去听，而要用心去听；不要用心去听，而要用气去听。

最好的公司不是因为创始人想要一家公司而成立的，而是因为创始人想要改变世界。