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.

技术是工具，创意才是灵魂。

我不会让我的国家失望。

我们每个人都不如我们所有人聪明。

成功是日复一日微小努力的总和。

You need patience, discipline, and agility to take losses and adversity without going crazy.

在人类（和动物）的漫长历史中，那些学会最有效合作和即兴发挥的人才能胜出。