[美]大衛 D. 弗裏德曼(David D. Friedman)，芝加哥大學物理學博士，著名經濟學傢、法學教授、科幻小說傢，美國聖塔剋拉拉大學教授，諾貝爾經濟學奬獲得者米爾頓·弗裏德曼之子。大衛以傢學淵源的深厚經濟學素養為底，用活潑的文字拆解看似復雜的難題，作品廣受學者重視和稱贊，其中包括貝爾剋、布坎南、波斯納等。著有《經濟學與法律的對話》（Law's order）《價格理論》（Price theory）《弗裏德曼的生活經濟學》(Hidden Order)等。

Price theory, often misleadingly labeled "microeconomics," is the explanation of how individual actors coordinate via markets, prices, and exchange to produce, distribute, and consume goods and services. Worked out more than a century ago, it remains the core of modern economic theory. This text, first published in 1986 and now combining material from the first two editions, emphasizes understanding over formal analysis, using verbal explanation to supplement mathematical argument. While optional sections require an understanding of calculus, the central arguments do not. The theory, once worked out, is applied both to the conventional topics of the classroom and to less obviously economic features of human behavior—love, marriage, crime, politics."Although the range of behavior analyzed with the economic way of thinking has been greatly extended during the past several decades, textbooks on economic principles generally have taken a much narrower view of the scope of economics. This is not surprising since recent developments in a scientific field usually do not find their way into textbooks for many years. Fortunately, several economics texts in recent years have begun to take a broader view, and this text by David Friedman does so in the most thoroughgoing and satisfactory manner of any that I have seen. Every chapter shows evidence of a skilled and imaginative economist applying his tools to the world around him."(From the forward by Gary Becker)