有能力的程序员完全意识到自己头骨的严格有限尺寸；因此他以完全的谦逊态度对待编程任务，并且避免像瘟疫一样的聪明技巧。
The competent programmer is fully aware of the strictly limited size of his own skull; therefore he approaches the programming task in full humility, and among other things he avoids clever tricks like the plague.
The psychologist must be a meticulous observer.
里氏替换原则是面向对象编程中的一个基本概念，确保派生类可以替代其基类使用，而不会改变程序的正确性。
The Worldly Hope men set their Hearts upon Turns Ashes—or it prospers; and anon, Like Snow upon the Desert's dusty Face, Lighting a little hour or two—is gone.
成功不是幸福的关键。幸福才是成功的关键。如果你热爱你所做的事情，你就会成功。