The major aspects with regard to the development of environmental and ecological perceptions were the scarcity and depletion of natural resources. In this perspective, there are two methods that can be used to investigate the notion of "eco-management" or "green management" in the history of economic philosophy: looking for the concept hidden in the words, or performing a word search. Linguistically, this is equivalent to searching between the definer and the defined. As for eco-economics systems (ecological economics or environmental economics), they are at the meeting point of these two perspectives. In other words, the research, in the 20th-21th century history of economic ideas, the moment when the expression "eco-economy" appeared with its modern meaning will be developed in the present article.