光芒从一个山脊传到另一个山脊。
教育是燃起火焰，而非灌输一个容器。
What I am is good enough, if I would only be it openly.
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.
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."