We don't inherit the land from our ancestors; we borrow it from our children.
非经典逻辑的研究不仅是一种学术练习,更是理解复杂系统的必要条件。
The magic, the wonder, the mystery and the innocence of a child's heart are the seeds of creativity that will heal the world.
Children totally accept — and crave — family rules. “In our family we have a rule for X” is the only excuse a parent needs for setting a family policy. In fact, “I have a rule for X” is the only excuse you need for your own personal policies.
Sustainable development requires us to balance economic growth with environmental protection.
永远不要停止学习——当你认为自己什么都懂的那一刻,就是你开始落后的时刻。