在家不会接待客人，出去后才知道这个问题的重要性。
Capitalism, then, is by nature a form or method of economic change and not only never is but never can be stationary.
The best way to predict the future is to invent it.
Sustainability is not just about planting trees; it's about planting the right trees in the right places for the right reasons.
"The greatest wealth is to live content with little."