行为主义者放在自己面前的规则或衡量标准总是：我能否用"刺激和反应"来描述我所看到的这一行为？

"Every book is a journey, and every journey changes us."

"Every discovery is a piece of the puzzle that is our universe."

As to the gods, I have no means of knowing either that they exist or that they do not exist. For many are the obstacles that impede knowledge, both the obscurity of the question and the shortness of human life.

没有人想死。即使那些想上天堂的人，也想活着上天堂。

文化资本是阶级斗争中的一种武器。

Don't write your name on sand, waves will wash it away. Don't write your name in sky, wind may blow it away. Write your name in the hearts of people, that's where it will stay.

数学中最深刻的思想往往源于最简单的观察。