"We are all the heroes of our own stories, and sometimes the villains too."

Program testing can be used to show the presence of bugs, but never to show their absence!

万物都存在于心中，心中充满道理，充塞宇宙的也无非是这个理。

文章的最高境界，能够通达神明，穷尽天地，变化古今，而不可更改。