幸福是一种心态，而不是一系列环境。
The interplay between theory and practice in computer science is what drives innovation and progress.
亲眼目睹世道的变化趋向，才知道国家治乱的关键必定在于人心的向背和风俗的好坏。
最终，我们都只是故事。
If you can't explain it simply, you don't understand it well enough.