如果你想飞翔，就必须放弃拖累你的东西。
"If you want to fly, you have to give up what weighs you down."
知足常乐者最富有，因为知足本身就是天然的财富。
"Every child deserves a bookshelf full of stories that reflect their own experiences and open windows to new worlds."
学习不是一个被动的过程；它涉及知识的主动构建。