The greatest glory in living lies not in never falling, but in rising every time we fall.

No one had ever had such a friend, so affectionate,so loyal and so skillful.

质量的第一条规则是它必须被定义。

在变革的时代，学习者将继承地球，而知晓者会发现自己装备精良却面对一个不复存在的世界。