我对解决已经解决的问题不感兴趣。
I am not interested in solving problems that are already solved.
The beauty of computational complexity lies in its ability to classify problems based on their inherent difficulty.
I believe in the long-term growth of the United States.
心灵不是一种物质，而是一个过程。
追求知识是一段永无止境的旅程，充满了挑战和胜利。
母亲的心是一个深渊，在它的最深处你总会得到宽恕。
如果你不愿意冒险，你将一事无成。