一个人肚子空空，心事重重，总是睡不好觉的。
And when your stomach is empty and your mind is full,it's always hard to sleep.
智者说话，是因为有些话要说；愚者说话，则因为要说些话。
Sustainability is not just about protecting the environment, it's about creating a system that works for everyone.
"We are all searching for something, and sometimes, what we find is not what we expected."
The end of wisdom is to dream high enough to lose the dream in the seeking of it.
But it is the same with man as with the tree. The more he seeks to rise into the height and light, the more vigorously do his roots struggle earthword, downword, into the dark, the deep - into evil.