计算复杂性的美在于它能够根据问题的固有难度对问题进行分类。
能源独立能增强经济实力并提升国家安全。
当障碍被消除、合作被鼓励时，创新就会蓬勃发展。
A non-writing writer is a monster courting insanity.
我们都是自己过去的幽灵，徘徊在我们曾经熟悉的地方。
The role of business is to produce products and services that make people's lives better—while using fewer resources—and to act lawfully and with integrity.
The problem with marriage is that it ends every night after making love, and it must be rebuilt every morning before breakfast.