计算机科学成功的关键不仅在于编写代码，还在于理解使其工作的基本原理和理论。
The key to success in computer science is not just about writing code, but understanding the underlying principles and theories that make it work.
To feed the world, we must first understand it.
The coal industry is the backbone of America.
在冬天的深处，我发现我内心有一个不可战胜的夏天。
有时你必须撒谎。但对自己，你必须永远诚实。