Chemistry is not just about what you can make, but how you can make it.
在数学中，就像在生活中一样，最深刻的发现往往来自于提出最简单的问题。
在一个不精确的世界中，模糊集的概念提供了一种自然的方式来处理那些不精确性源于缺乏明确定义的类别成员标准的问题。
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.
祖国是祭坛，不是基座。