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.

城市是人类最伟大的发明。

the most famous composer in the world but was utterly miserable most of the time, and of the reasons was because he always overspent his income.This was Mozart.If Mozart couldn't get by with this kind of asinine conduct, I don't think you should try.

The mind is a network of interdependent processes.