Life is too short to waste time on negativity.
The proof of a system's value is its existence.
可持续性不再是可选项，而是我们前进的唯一道路。
The greatest glory in living lies not in never falling, but in rising every time we fall.
解释：饿了再吃，粗茶淡饭味道也像吃肉一样可口。安稳走路就不会感觉到劳累，权当坐车。