软件开发中最重要的一个方面是明确你试图构建什么。

"A book is a fragile creature, it suffers the wear of time, it fears rodents, the elements and clumsy hands. So the librarian protects the books not only against mankind but also against nature and devotes his life to this war with the forces of oblivion."

I believe that we are lost here in America, but I believe we shall be found.