Be the change you wish to see in the world.
你知道得越多,你就越意识到你不知道的越多。
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."
形容医生对待患者时应保持高度谨慎和责任感
不登上高山,就不知道天是多么高远;不亲临深溪,就不知道地是多么深厚。