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."

生活中唯一的限制是你自己设定的。

我总是努力从每一种情况中吸取教训。

An expert is a person who has made all the mistakes that can be made in a very narrow field.

数学是理性的音乐。

音乐是一种道德律，它使宇宙有了魂魄，心灵有了翅膀，想像得以飞翔，使忧伤与欢乐有如醉如痴的力量，使一切事物有了生命；它是秩序的本质，引向成为真、善、美的一切。