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!
哦,我要做生活的主宰,不是奴隶。
过去总是紧张的,未来是完美的。
不沉溺于过去,专注未来。
Instead of singing like the birds, I silently smiled at my incessant good fortune.
无论成本压力如何,质量都不应妥协。
The best preparation for tomorrow is doing your best today.