一课经济学(Economics in One Lesson)简介：
Economics in One Lesson is an introduction to free market economics written by Henry Hazlitt and published in 1946, based on Frédéric Bastiat's essay Ce qu'on voit et ce qu'on ne voit pas (English: "What is Seen and What is Not Seen").

The "One Lesson" is stated in Part One of the book:

The art of economics consists in looking not merely at the immediate but at the longer effects of any act or policy; it consists in tracing the consequences of that policy not merely for one group but for all groups.
Part Two consists of twenty-five chapters, each demonstrating the lesson by tracing the effects of one common economic belief, and showing that common economic belief to be a fallacy.

In a paperback edition in 1961, a new chapter was added on rent control, which had not been specifically considered in the first edition apart from government price-fixing in general. A few statistics and illustrative references were brought up to date.

In 1978, a new edition was released. In addition to bringing all illustrations and statistics up to date, an entirely new chapter on rent control replaced the previous one of 1961, and a final new chapter, "The Lesson After Thirty Years," was added.

The 50th Anniversary edition came out in 1996 from Fox & Wilkes in paperback (ISBN 0930073193) and hardback (ISBN 0930073207)

The Madrid-based Spanish publishing house Unión Editorial, which traditionally publishes books in Spanish language in defense of market economy and liberalism, released "La Economía en una lección" in 1981, 1996 and 2005.

A German edition, titled Economics. Über Wirtschaft und Misswirtschaft, was first release in 1983 by Poller in Stuttgart. In May 2009, it was reprinted by Olzog　　本书是美国著名经济专栏作家亨利·黑兹利特专为社会大众撰写的经济学入门读物。全书包括三大部分26章，以一堂课的形式，深入浅出地讨论了涉及现实社会经济生活的诸多问题，例如公共建设工程、税收、政府信贷、就业与失业、关税、最低工资、进出口、价格体系、房租管制、工会、最低工资、利润、储蓄、通货膨胀等，以最简单的阐述方式，向读者逐次解读这些复杂的经济问题背后的真相、什么样的经济政策会造成什么样的结果。
　　同时，针对那些广为流传的经济理论或学说中存在的谬误，黑兹利特进行了毫不留情的揭露、批驳，从而帮助社会大众更了解经济世界运作的法则。
　　本书以浅显的文字取代了高深的经济学术语与复杂的公式，为经济学入门提供了一种最为迅捷和有效的方式。