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.

上帝在他的天堂——世界一切安好！

I’m not here to fit in, I’m here to break the mold.

Today is cruel, tomorrow is crueler, and the day after tomorrow is beautiful, but most people will die tomorrow night, so don't give up today.

我最大的幸福就是做自己喜欢的事。

保持谦逊，保持渴望。