旅行就是发现每个人对其他国家的看法都是错误的。
成为英雄的最大障碍是怀疑自己是否会证明自己是个傻瓜；真正的英雄主义是抵抗这种怀疑，而最深刻的智慧是知道何时应该抵抗，何时应该服从。
The fountain of content must spring up in the mind, and they who have so little knowledge of human nature as to seek happiness by changing anything but their own dispositions will waste their lives in fruitless efforts.
大多数人发现编程的概念很明显，但是做不到。
The most important property of a program is whether it accomplishes the intention of its user.
