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.

一本好书是一位伟大的老师。

If you can't explain it simply, you don't understand it well enough.

每一个词都是选择，而每一个选择都是牺牲。

广东话谚语

要是你们能够洞察时间所播的种子，知道哪一颗会长成，哪一颗不会长成，那么请对我说吧；我既不乞讨你们的恩遇，也不惧怕你们的憎恨。