阅读只为心灵提供知识的材料；是思考使我们所读的内容成为我们自己的。
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
每一本书都是通往另一个世界的门，每一个读者都是旅行者。
Optimism is a strategy for making a better future. Because unless you believe that the future can be better, you are unlikely to step up and take responsibility for making it so.
经济景观是一个由不同等级的中心地组成的系统，每个中心地为特定区域服务。