We must keep learning to keep up with the times.
To love is to risk everything, but to not love is to risk even more.
中国的崛起对自由民主秩序构成了重大挑战。
"The goal of mathematics is to understand the universe."
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。
My work is my response to the world.