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.

Time erodes all such beauty, but what it cannot diminish… is the wonderful workings of your mind. Your humor, your kindness… and your moral courage.

我喜欢修指甲，我喜欢打扮，我喜欢哪怕在闲暇时也涂唇膏穿盛装，我喜欢粉色。我相信快乐的女孩最漂亮。我相信明天的太阳是新的……我相信奇迹的存在。

Law is not a closed logical system, but a means of social control.