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！

"Complexity theory teaches us that not all problems are created equal; some are inherently harder than others."

在阈限阶段，共同体作为一种自发的、直接的和平等的人际关系出现。

To safeguard national independence, we must strengthen national unity.

I'm not perfect, but I'm trying every day to be better.

最好的领导者是那些最热衷于让比自己更聪明的人围绕在身边的人。