“Poverty has no causes, wealth has causes”—this statement, attributed to the development economist Peter Bauer (1915-2002),1 may serve as the title of a book on the entire history of growth theory since Adam Smith’s An inquiry into the nature and causes of the wealth of nations (Smith, 1776). Indeed to understand why the standard of living differs across people, countries and time we need to understand the causes of wealth. This is the topic of the current Economics and Business Review. With this issue the Review honours the outstanding contribution of Professor Oded Galor, Herbert H. Goldberger Professor of Economics at Brown University, to the field of growth theory. At the same time it celebrates the degree of doctor honoris causa that the Poznań University of Economics and Business conferred on him in 2019.2 Oded Galor’s eminent research on the causes and the consequences of economic growth has substantially advanced our understanding of how and why economies accumulate wealth differently. His research has a tremendous impact on the scientific community. The breadth as well as the depth of his research agenda is impressive.3 Seminal contributions to the fields of inequality and economic growth (Galor & Zeira, 1993) and of comparative development (Ashraf & Galor, 2011) stand out. Research papers like Galor and Moav (2002) and Ashraf and Galor (2013) initiated a new literature on the deep roots in comparative economic development. In the profession and beyond, Oded Galor is probably best known as the founder of Unified Growth Theory (Galor, 2005, 2011). This fascinating theory depicts humanity’s process of economic development from the Malthusian Regime to the Modern Growth Regime in a single analytical framework that accounts for the specifics of each regime as well as for the endogenous transition between them. The first paper of this issue is Oded Galor’s article The journey of humanity: Roots of inequality in the wealth of nations. Here the author provides a brief and concise world economic history from the vantage point of Unified Growth Theory. Covering the time span from the appearance of Homo sapiens some 300,000 years up to now his focus is on two striking mysteries of human history namely, i) the emergence of sustained economic growth in large parts of

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“贫穷没有原因，财富有原因”-这一说法归功于发展经济学家彼得·鲍尔（Peter Bauer，1915-2002），1可能是亚当·斯密（Adam Smith）提出的有关增长理论整个历史的书的标题。国家财富的性质和原因（史密斯，1776年）。的确，要了解为什么生活水平因人，国家和时间的不同而有所差异，我们需要了解造成财富的原因。这是本期《经济与商业评论》的主题。本期《评论》对布朗大学经济学教授赫德·H·戈德伯格的奥德·加德教授对增长理论领域的杰出贡献表示敬意。同时，它庆祝波兹南经济贸易大学于2019年授予他荣誉博士学位。2奥德·加罗尔（Oded Galor）对经济增长的原因和后果的杰出研究大大提高了我们对经济如何以及为何以不同方式积累财富的理解。他的研究对科学界产生了巨大影响。他的研究议程的广度和深度令人印象深刻。3在不平等和经济增长领域（Galor和Zeira，1993年）和比较发展领域（Ashraf和Galor，2011年）的开创性贡献令人瞩目。Galor和Moav（2002）以及Ashraf和Galor（2013）等研究论文开创了关于比较经济发展的深层根源的新文献。在行业内外，Oded Galor可能是最著名的统一增长理论的创始人（Galor，2005，2011）。这个引人入胜的理论在一个分析框架中描述了人类从马尔萨斯政权到现代增长政权的经济发展过程，该框架解释了每个政权的细节以及两者之间的内生过渡。此问题的第一篇论文是Oded Galor的文章《人类的旅程：国家财富不平等的根源》。在这里，作者从统一增长理论的观点出发，简要扼要地介绍了世界经济史。涵盖从智人出现到现在约30万年前的时间跨度，他的工作重点是人类历史上两个惊人的谜团，即：i）在非洲大部分地区出现了持续的经济增长 在这里，作者从统一增长理论的观点出发，简要扼要地介绍了世界经济史。涵盖从智人出现到现在约30万年前的时间跨度，他的工作重点是人类历史上两个惊人的谜团，即：i）在非洲大部分地区出现了持续的经济增长 在这里，作者从统一增长理论的观点出发，简要扼要地介绍了世界经济史。涵盖从智人出现到现在约30万年前的时间跨度，他的工作重点是人类历史上两个惊人的谜团，即：i）在非洲大部分地区出现了持续的经济增长