The uniform， constant， and uninterrupted effort of every man to better his condition， the principle from which public and national as well as private opulence is originally derived.

"Der Mensch ist der Hirt des Seins."

美国人的生活中没有第二幕。

"The true power of literature lies in its ability to give voice to the voiceless."

Take one simple thing — almost anything — but take it extremely seriously， as if it was the only thing in the world， or maybe the entire world is in it — and by taking it seriously you’ll light up the sky.

社会结构的研究是构成社会的社会关系系统的研究。