未来属于那些相信自己梦想之美的人。
里氏替换原则是面向对象编程中的一个基本概念,确保派生类可以替代其基类使用,而不会改变程序的正确性。
我们不仅生活在思想的世界中,而且也生活在物质的世界中。
The best technology is invisible. It works so well that you don't even notice it.
The power within you is infinite, if you only realize it.
The rule of law is a political ideal, not a legal concept.