Never stop learning—the moment you do, you fall behind.

The Liskov Substitution Principle is a fundamental concept in object-oriented programming, stating that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program.

我希望我的书能帮助孩子们以不同的方式看待世界，注意到那些微小的细节和隐藏的意义。

我不遵循任何特定的理论，我只做我认为正确的事。

长江后浪推动前浪，世上新人层出不穷。