"The world is changed by your example, not by your opinion."

The future of liberal democracy depends on its ability to address the challenges of inequality and political polarization.

The mind is an unnecessary construct for explaining behavior.

I always try to be better than I was yesterday.

教学是我最伟大的艺术作品。

如果你不冒险，你将永远为那些敢于冒险的人工作。