To be human is to be vulnerable.

Mathematical intuition often guides the development of algorithms, but it is the rigorous proof that ensures their correctness and efficiency.

The relationship between wages and employment is not as straightforward as some models suggest.

在旧制度下，努力工作意味着尽可能少做。

The best way to predict the future is to invent it.

梦境与现实之间的界限比我们想象的要薄。

"A book is a journey of the mind."

解释：第一次击鼓能振作士兵们的勇气，第二次击鼓可以使士兵们的勇气低落，第三次击鼓士兵们的勇气就消失了。

老鼠和人之间的唯一区别是老鼠会从经验中学习。