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.

解释：治理河道，要用疏导的办法使其通畅；治理百姓，要引导百姓使其敢言。

Architecture is a visual art, and the buildings speak for themselves.

所有模型都是错误的，但有些是有用的。

"Every character we create carries a piece of our soul, whether we admit it or not."

"The use of traveling is to regulate imagination by reality, and instead of thinking how things may be, to see them as they are."

音乐让我学会了感恩。