There is no easy walk to freedom anywhere, and many of us will have to pass through the valley of the shadow of death again and again before we reach the mountaintop of our desires.

自由的目的是为了解放他人。

最高的知识是对自我的认知。

The happiest people don’t have the best of everything; they make the best of everything.

未来属于那些能够明智利用能源的人。

"Approximation algorithms are a testament to the power of compromise in achieving practical solutions."

解释：要量力而行，实力达得到就进攻，达不到就撤退。