开始总是在今天。

Fear is a habit. I am not afraid.

International politics is a brutal and dangerous business, and it is likely to remain that way.

【释义】凯根打破童年决定论：快乐童年未必护航成年，而经历过黑暗的孩子反而可能锻造韧性。

Confidence is the best outfit.

农业的效率不仅仅是产量的问题；它关乎资源管理。

一个组织的专注质量决定了其结果的质量。

The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.

浪漫的本质就是不确定性。