数学的语言是宇宙的语言，通过学习它，我们可以理解宇宙。

There is no despair so absolute as that which comes with the first moments of our first great sorrow, when we have not yet known what it is to have suffered and be healed, to have despaired and have recovered.

机会眷顾准备好的人。

文化的功能观点坚持这样的原则：在每一种文明类型中，每一种习俗、物质对象、观念和信仰都履行某种重要功能，完成某些任务，代表一个运作整体中不可或缺的部分。