我喜欢练习。当我不在比赛时，我就在练习。

"History is not just what happened, but what people thought and felt about it."

The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.

真理就是在经验面前站得住脚的东西。

国家不是艺术品，而是一种必需。

没有好的用户体验，再好的商业模式都是空谈。