Natural experiments can provide valuable insights into economic questions.

I'm not a person who gives up on my strength.

互联网的精髓是自由和分享。

To write is to confront the void.

Success in business comes from understanding the customer better than anyone else.

The most dangerous weapon is not the one that kills, but the one that changes minds.

The wall is the oldest and most revolutionary architectural element.

阅读是不动而旅行；写作是旅行而不动。