真相是，我们都在寻找某种东西，但我们不知道它是什么。
The truth is that we are all searching for something, but we don't know what it is.
The stranger is close to us, insofar as we feel between him and ourselves common features of a national, social, occupational, or generally human, nature. He is far from us, insofar as these common features extend beyond him or us, and connect us only because they connect a great many people.
思想，在理解和想象的程度上，都是被动的。
The historian’s task is to bring the dead to life.
行为由当前刺激情境和过去的强化历史决定。
The most important property of a program is whether it accomplishes the intention of its user.
No medicine cures what happiness cannot.