在孩子的生命中，没有什么可以替代书籍。
在我们城市的废墟中，我们寻找身份的碎片。
做这件事的唯一方法就是去做。
If you want to see what this nation is all about, you have to ride the rails. Look outside as you speed through, and you’ll find the true face of America.
Mathematics is the language of the universe, and through it, we can understand the fundamental principles that govern our world.