Program testing can be used to show the presence of bugs, but never to show their absence!
程序测试可以用来显示错误的存在,但绝不能显示它们的不存在!
In mathematics, the journey is often more important than the destination.
在每个角色中,都有我的一部分,而在我身上,也有我扮演过的每个角色的一部分。