History is that certainty produced at the point where the imperfections of memory meet the inadequacies of documentation.

我们必须平衡当今对可负担能源的需求与建设可持续能源未来的必要性。

你对一种情感感受得越深，就越难表达它。

The only way to do great work is to love what you do.

The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.

"If liberty means anything at all, it means the right to tell people what they do not want to hear."

Writing is a way of life, a way of being in the world.