A traditional recipe actually is based on a small set of primitives, and a good chef with, or good cook, I should say, with that set of primitives, can create an unbounded number of great dishes.

一个传统的菜谱实际上是,建立在一小堆的原材料，和一个好厨师，或者好厨子之上的，我要说，根据那堆原材料，可以创造出无数的美味佳肴来。

麻省理工公开课 - 计算机科学及编程导论课程节选

Second thing they're going to do is let us suppress detail. And in essence what that does is, the functions, and we're going to look at a bunch of examples in a second, these functions are going to give us a way to, in some or in one way of thinking about it is to create new primitives.

第二件要做的事,是忽略细节,函数的本质到底是什么,我们将在接下来的几分钟，举一些例子，这些函数将给我们提供,一种创建原语的思考方式。

麻省理工公开课 - 计算机科学及编程导论课程节选