代数是人类创造的一种智力工具，用于清晰地表达世界的数量关系。

引用戴青

You have to be willing to make mistakes regularly; there is nothing wrong with it. Michael taught me about making your best judgment, being wrong, making your next best judgment, being wrong, making your third best judgment, and then doubling your money.

天才是疯狂的诸多形式之一。