"The difference between correlation and causation is fundamental in empirical work."

投资的未来在于利用技术和数据的能力。

Success is about being happy with what you're doing.

The best way to cheer yourself up is to try to cheer somebody else up.

作家的职责是讲述真相，无论多么痛苦。

过去半个世纪最重要的政治发展是自由民主在世界范围内的传播。