The absence of alternatives clears the mind marvelously.

解释：人有知识，犹如树木有枝叶，树木有了枝叶，能带给人阴凉，人有了知识，就可以为人民做更多的事。

The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart.

Innovation in market mechanisms can unlock value that traditional approaches miss.

To write is to resist the forces of forgetting.

如果你不能保持灵活的思路，就会抓狂，忽视解决问题的其他可能性。

我认为生活中最重要的事情就是敢于梦想。

最好的书是挑战你的书。