To find out what one is fitted to do, and to secure an opportunity to do it, is the key to happiness.

Black holes are not just cosmic vacuums; they are the ultimate laboratories for testing the limits of our physical theories.

You have to be willing to sacrifice what you are for what you will become.

Design is not just what it looks like and feels like. Design is how it works.

美存在于观察者的适应机制中。

我写作是为了理解周围的世界。

I don’t do things for the reaction or the criticism. I do things because I love doing them.

The world is my country, all mankind are my brethren, and to do good is my religion.

对于系统，翻版的模拟是在控制图中添加一个创建循环的边，而不仅仅是一个附加节点。