The beauty of a mathematical proof is in its elegance and the way it reveals the underlying truth in a clear and concise manner.

Every problem in NP can be reduced to the satisfiability problem, which is the cornerstone of computational complexity theory.

"Every saint has a past, and every sinner has a future."

我们都是在一艘叫做地球的小宇宙飞船上的宇航员。