Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

The longer I live the more I see that I am never wrong about anything, and that all the pains I have so humbly taken to verify my notions have only wasted my time.

有能力的程序员完全意识到自己头骨的严格有限尺寸；因此他以完全的谦逊态度对待编程任务，并且避免像瘟疫一样的聪明技巧。