智者贵在乘时，时不可失。
史记
一个物品的旅程可以告诉我们比物品本身更多的东西。
永远不要停止学习；世界在不断发展，我们也应该如此。
The line between madness and genius is drawn by those who fear both.
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.