找出一个人最适合做的并保障他(她)能够去做的机遇环境，是通往幸福的关键。
To find out what one is fitted to do, and to secure an opportunity to do it, is the key to happiness.
AdS/CFT对应是理解量子引力的有力工具。
出自北齐·颜之推《颜氏家训·勉学篇》。秉，持、拿。犹，还。贤乎，胜于。少年时代就好学，就像是早上初升的太阳之光；老来才知道虚心向学，就像是拿着蜡烛走在暗夜中。尽管如此，还是比闭着眼睛什么也看不到要强多了。意在鼓励人们时刻不忘学习上进，如果错过学习的最佳时机，努力追补，仍然是精神可嘉的表现。
过去总是存在于我们讲述的故事中。
The interest of the behaviorist in man's doings is more than the interest of the spectator—he wants to control man's reactions as physical scientists want to control and manipulate other natural phenomena.