最伟大的发明是那些最直接满足人类需求的发明。
The greatest inventions are those which most directly meet the wants of mankind.
In the end, we are all just trying to find a place where we belong.
旋风不能奏出动听的音乐；心灵手巧的妇人未必能够主持好饮食家务；（只会）做文章的读书人不能够治理好国家。
Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible.