成人必须给幼儿提供活动的空间。
Every life is in many days, day after day. We walk through ourselves, meeting robbers, ghosts, giants, old men, young men, wives, widows, brothers-in-love, but always meeting ourselves.
"In the end, we will remember not the words of our enemies, but the silence of our friends."
预测未来的最好方式就是创造未来。
研究学习的唯一有意义的方法是通过客观测量。
不要害怕失败，失败是成功的必经之路。
He who is not a good servant will not be a good master.