The strength of a political system lies in its ability to adapt to changing circumstances and to incorporate new ideas and practices.

写作是一种希望的行为。

"Your attitude determines your direction."

People don’t want to remember pain; they want to remember love. But pain is also part of our history.

I have to be alone very often. I'd be quite happy if I spent from Saturday night until Monday morning alone in my apartment. That's how I refuel.

定理是永恒的；它们的证明是短暂的。

世界的真正历史是伟人的历史。

在计算机科学中，我们总是在寻找表达能力和可处理性之间的平衡。