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 Liskov Substitution Principle is a fundamental concept in object-oriented programming, ensuring that derived classes can be used in place of their base classes without altering the correctness of the program.
最好的投资是你可以长期持有的投资。
The true measure of an economy’s success is how well it serves all its citizens.
Never underestimate the power of a simple idea executed well.
我不是说唱歌手，我是个现象。
好奇心是推动科学进步的引擎。
当你开始考虑如果你输了你会做什么的那一刻，你就已经输了。