每一项伟大突破最开始都是可笑的、荒谬的。事实上，如果它一开始不是可笑和荒谬的，就不是突破。

Every setback is a setup for a comeback.

Liberal democracy may constitute the "end point of mankind's ideological evolution" and the "final form of human government," and as such constituted the "end of history."

只有不断学习，才能不断进步。