[美]大卫 D. 弗里德曼(David D. Friedman)，芝加哥大学物理学博士，著名经济学家、法学教授、科幻小说家，美国圣塔克拉拉大学教授，诺贝尔经济学奖获得者米尔顿·弗里德曼之子。大卫以家学渊源的深厚经济学素养为底，用活泼的文字拆解看似复杂的难题，作品广受学者重视和称赞，其中包括贝尔克、布坎南、波斯纳等。著有《经济学与法律的对话》（Law's order）《价格理论》（Price theory）《弗里德曼的生活经济学》(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)