儿童值得拥有既让他们高兴又挑战他们的艺术。
The known is finite, the unknown infinite; intellectually we stand on an islet in the midst of an illimitable ocean of inexplicability.  
人们都保有原本的视觉,天下就不会有毁坏;人们都保有原本的听觉,天下就没有忧患;人们都保有原本的智慧,天下就不会有迷惑;人们都保有原本的品德,天下就没有邪恶。
When a child asks an endless string of “why?” questions, the smartest reply is, “I don’t know, what do you think?”
可持续性不是一个流行词,而是一种商业必需。
Virtue consists, not in abstaining from vice, but in not desiring it.