"A good line of poetry should surprise you twice: when you write it and when you read it."
自然和历史是地理知识的两个重要来源。
价格之重要，并不在于金钱是至高无上的。在零星分散的信息必须得以协调的巨型社会中，价格乃是快速而有效的信息传导。
真正的理解来自同理心。
The American farmer is the only man in our economy who has to buy everything he buys at retail, sell everything he sells at wholesale, and pay the freight both ways.
