用硬件定义体验的时代结束了，现在是软件定义体验的时代。

The strength of liberal democracy lies in its ability to self-correct and reform.

It is not, nor cannot come to good. But break, my heart, for I must hold my tongue.

如果你让人们稍微进入你的生活，他们可能会非常了不起。

The only way to learn mathematics is to do mathematics.