我们很容易原谅害怕黑暗的孩子；真正的悲剧是成人害怕光明。
We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light.
在计算机科学中，我们经常处理那些容易陈述但难以解决的问题。
In computer science, we often deal with problems that are easy to state but hard to solve.
As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.
在年老之后，你会发现自己的双手能解决很多难题。一只手用来帮助自己，另一只用来帮助别人。
