I think goals should never be easy, they should force you to work, even if they are uncomfortable at the time.

没有循环和结构化变量的程序不值得编写。

人若能常保持清静之心，天地万物都会与之和谐共存。

行为有未能达到预期目的者，都要反过来要求自身做得更加完善。只有自己做得正，天下才会向你倾心。