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.

心理学家必须是一个中立的观察者。

Sustainability isn’t a buzzword—it’s a commitment to doing better every day.

Architecture must serve the many, not just the few.

跳舞吧，就像没有人观看一样；去爱吧，就像从未受过伤害一样。