最强大的生态系统是那些具有多样性的生态系统。
教育学中的实验方法不仅是研究的工具,更是理解教育过程的基本原则。
Limiting beliefs are the prisons of the mind, and learning is the key to freedom.
To be human is to be in the world, and to be in the world is to be in time.