"The only way to get rid of a temptation is to yield to it."

"We are all searching for something, but sometimes what we are searching for is already within us."

P与NP问题是计算机科学中最重要的未解决问题之一。

Reinforcement is the central factor in the acquisition of new behavior patterns.

一个人不是生来就是女人，而是变成女人的。