你必须承担个人责任。你无法改变环境、季节或风，但你可以改变自己。这是你可以掌控的事情。
You must take personal responsibility. You cannot change the circumstances, the seasons, or the wind, but you can change yourself. That is something you have charge of.
积极心理学不仅仅是感觉良好，它是关于美好生活——一种充满投入、意义和积极关系的生活。
The least I can do is speak out for those who cannot speak for themselves.
The rise of China and other authoritarian states challenges the idea that liberal democracy is the only viable political system.
It's a terrible thing to be alone—yes it is—but it's also terrible to be with people and still feel alone.