1906～1994，美国经济学家，在索邦大学接受培训，在哈佛大学作为约瑟夫·熊彼特的助手学习。1930 年代回到罗马尼亚，二战后为罗马尼亚政府工作。
乔治斯库-罗根有三个重要观察，来把经济视作不断发展的复杂系统：
创造经济价值的过程不可逆。
在经济系统中，时间是单向的，或者如罗根所说，不能用同一块煤驱动机车两次。
“偶然的观察都能证明经济生活依赖低熵，才智、布料、木材、瓷器、铜……都是高度有序的结构”。
经济过程是用能量将秩序较低的原材料、信息转换成高度有序的产品、服务。
产品、服务是创造秩序的活动，但并非所有秩序都有经济价值。
他含糊地说道：“没人能利用毒蘑菇的低熵，也不是所有人会追求海藻或甲虫的熵。”
罗根的熵经济学对畅销书《零成本边际社会》《第三次工业革命》作者杰里米•里夫金很有影响。
他通过研究进化论、物理学来寻找传统经济学的弱点，并在巨著《熵律与经济过程》（The Entropy Principle and the Economic Process, Harvard University Press, 1971）中结合了洛特卡的体外化理论与经济学，主张“生物学将变成经济学”。
他是把熵从表述状态函数的概念转变为一种物质或能量的“经济熵”概念的始作俑者，只看到利用资源时的浪费和资源的熵增加，而不谈论利用资源过程中本身的熵减，没看到资源被消耗前怎样集聚而变成有高度负熵的资源。
在《经济的环境》（Jean-Paul Fitoussi）一文中：经济不是独立于法律、道德和政治规则的封闭领域。最能引起兴趣的问题往往出现在经济学与其他学科的临界点。上述规律在经济过程和自然环境的相互作用中表现得最为明显。这种相互作用最显著的特征是其不服从力学定律，而服从热学定律，尤其是能量扩散定律，据此，能够转化为机械做功的自由能量随着时间而减少，是不可逆的，而“热寂”是这一过程终结时的归宿。
受他的研究的启发，特别是在 1970 年代，有研究人员尝试制定适用于经济和社会的“能量扩散”理论，但没取得多大成功。能量扩散论认为经济过程会以多种形式与自然界相互作用，从而造成不可逆的后果。我们不断开采不可再生的石油、金属矿藏等自然资源储备，以超过自然资源再生能力的速度从事开采活动，导致水、耕地等其他资源的质量退化或改变。开采不可再生资源使经济发展速度能够摆脱生态再生速度的束缚，加速了包括不可逆的气候变化在内的生物环境的恶化。能量扩散定律表明，我们将把遭到破坏的自然遗产留给后代，也许比先人留给我们的遗产更难满足他们的需求。无权把指定的生态节奏强加给比我们贫困的民众，因为我们虽然放慢了速度，但也是依靠那样的速度完成了财富累积。强制推行一种制度来再分配资源平等。
能量扩散定律不是决定发展的唯一要素，知识、技术进步也发挥了重要作用，其进程也不可逆。因此，经济发展会伴随资源的退降与知识的产生、系统化以及传播，而经济和环境可持续发展的前景就夹在这两种动态过程之间：增速必须有足够的知识水平作保障，系统才能持续运转。但自然和知识一样，是需要政府干预才能足量“出产”的公众利益。克服世界有限性唯一的方法是通过投资旨在增加可再生能源、降低现有能源消耗，以及减轻环境侵蚀的教育和研究来尽可能保证资源退降和技术进步之间存在足够的空间。如果策略的目的是管理两个动态过程，那么超越生态的限制将有可能促进经济的增长。
One of the most remarkable and profound thinkers in modern economics - and one of the few whose reputation and influence, despite relative neglect over his lifetime, has only increased over time and promises to keep on increasing. Nicholas Georgescu-Roegen was trained in mathematical statistics at Bucharest and the Sorbonne - receiving his Ph.D at 24. In the 1930s, he spent three years at Harvard, where he was apprenticed in economics by Joseph Schumpeter - and immediately put his mark on this new field with a few outstanding papers on producer and consumer theory (1935, 1936) - which included a solution of the "integrability problem" as well as killing the revealed preference-derivation of utility ("where is indifference?", he asked). He also set forth propositions on stochastic choice and lexicographic preferences. After returning to Bucharest, Georgescu-Roegen took on official duties for the Romanian government, including a position in the post-war negotiations with the Soviet Union. In 1948, Georgescu-Roegen fled Communist-controlled Romania, stowing himself and his wife away in barrels aboard an Istanbul-bound freighter. Georgescu-Roegen made his way back to the United States, finally settling at Vanderbilt University - finding the time, in the meanwhile, to contribute three seminal chapters to the celebrated Koopmans-edited 1951 Cowles monograph on linear programming and general equilibrium theory. There, we find several contributions - including the independent discovery of the Hawkins-Simon conditions, an alternative existence proof for von Neumann's system, the general laws of substitutability for Leontief systems and more. His ingenious contribution to the Marxian theory of crisis (1960) is also well-known. In 1966, Georgescu-Roegen bailed out of the Neo-Walrasian ship with a salvo of critical torpedoes - contained in the insightful and erudite introduction to his Analytical Economics (1966). There, he developed his initial ideas on a new biological or evolutionary approach to economic theory. His ideas were further developed and consolidated in his magnum opus, The Entropy Law and the Economic Process (1971). Georgescu-Roegen's claims, among others, were that an economy faces limits to growth, for which he invoked the Second Law of Thermodynamics ("useful energy gets dissipated"). Although generally ignored by mainstream economics, he was hailed by the fledlging environmental movement and, until the end of his life, never ceased to speak out on his ideas for a new approach to economic theory. Today, his work is gaining influence, and his insights are being grafted into the new field of evolutionary economics.
"Fixed Coefficients of Production and the Marginal Productivit Theory", 1935, RES.
"The Pure Theory of Consumer's Behavior", 1936, QJE.
"The Theory of Choice and the Constancy of Economic Laws", 1950, QJE.
"Leontief's System in the Light of Recent Results", 1950, REStat.