The only way to learn mathematics is to do mathematics.

"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."

结构化程序设计支持被排除中间语言的法律。

保持领先的唯一途径是不断创新和适应。