Program testing can be used to show the presence of bugs, but never to show their absence!
Confidence comes from within, and it's something you have to build every day.
科学方法是统一且不可分割的,科学方法既适用于物理问题,也适用于社会问题。
最好的文学诞生于我们是谁与我们渴望成为谁之间的矛盾。