在孩子身上获得最好的收获，请只花你预算的一半的钱，但花双倍的时间陪伴他们。
For the best results with your children， spend only half the money you think you should， but double the time with them.
Every tree planted today is a promise to tomorrow.
The most effective economic organizations are those that are able to combine the efficiency of large-scale operations with the flexibility and innovation of small-scale ones.
要养活世界，我们必须先了解它。
一个理智的人在一个疯狂的社会里必须显得疯狂。