函数的概念在数学中是基础的，而λ演算提供了一种形式化这一概念的方法。

You can have a lifetime of trying to get away from where you started out, and it’s only when you get there you realize you’ve brought it with you.

我不想成为冠军。我想成为挑战者。

释义：跟交情浅的朋友说过多的隐私的事情，是愚蠢的。提醒人们在与人交往时，要根据实际情况和关系的深浅，采取适当的态度和行动。