程序测试可以用来显示错误的存在,但永远不能显示它们的缺失!
Program testing can be used to show the presence of bugs, but never to show their absence!
The only thing worth writing about is the human heart in conflict with itself.
成功不在于你赚了多少钱,而在于你对人们生活的影响。
解释:把腹心的疾病去掉,而放在大腿胳臂上,有什么益处?