计算复杂性的概念不仅仅是我们能计算多快，还包括理解什么是可以计算的极限。
The concept of computational complexity is not just about how fast we can compute, but also about understanding the limits of what can be computed.
The future belongs to those who dare to dream and have the courage to pursue those dreams.
The stars near the galactic center are like cosmic clocks, helping us map spacetime.
当你停止追求进步的那一刻，就是你开始死亡的那一刻。