Freedom is not a gift but an achievement that must be won every day.
There are two ways to write error-free programs; only the third one works.
生命真正的意义是种树，而不指望坐在树荫下。
孔子说：“君子吃不求饱、住不求安、做事灵敏、言谈谨慎、积极要求上进，就算好学了。”