In this paper, based on specialized research and their own opinions, the authors try to find an equilibrium, a reconciliation of man with nature so that the future of following generations will not be threatened, although the global statement is for this to happen. The approach begins with the semantics of the title, approaching separately both components and also with the fact that etymologically, economy and ecology are related, having the same purpose, the management of material and human resources, but in a different manner. In the introduction, we are presenting the relationship between man and the environment, from the emergence of the human species on Earth to this day. At the beginning of its existence, by providing the existential needs, man has not brought major damages to nature. Not the same can be said once the industrial revolution began and especially with the new technical-scientific revolution, in short, modern science and technique, significantly increasing man’s power, have, on average, raised the living standards everywhere, consuming ever more resources.\nThe next aspect is that of ecology, as a new science emerging out of rational reasons, aiming the protection of the environment and therefore of humans. Ecology can be characterized as a science of nature, with a relational character, a science of ecosphere, a universal science. In terms of time and reasoning, the following limitations of ecology can be mentioned: limitations due to some material factors, due to some spiritual factors, conceptual and existential limitations. In our opinion, ecology may show us the future of humanity in two ways: the first one shows us that we are not able to get over the greed and selfishness that defines us as people and beyond. We will get to the point of having an infected planet, new diseases will appear, which we will not be able to handle, we will hunger for some clean water, we will be dreaming about long ago disappeared fruit and vegetables, we will kill each other and fight in wars for the few fertile lands left and clean waters, we will face natural disasters etc. And in a sad end, we, people, will self-exterminate, we will disappear as human beings and the land will of course regenerate and will start all over again without us. The second option shows a more optimistic future, in which humanity will face genuine survival problems, in which natural resources have been exhausted and the population will seriously decrease and a small number of intelligent people of those remaining will isolate themselves from the rest of the world and wait for the end of the crisis, when they will be the only ones left. From this moment on, they will come to light, they will start from zero, they will create a new world, a new chapter of humanity, one in which all is well-thought and planned, where there will not be mistakes, but only evolution, a world without money, without capitalism, politics, or leaders of any kind. It will be a world where research and the evolution of knowledge about everything is paramount, a world where the number of the population will be planned and controlled.\nEconomy, through the shocking realities, translated by the environmental crisis and the uncertainty of the future of humanity on Earth is called to reconcile man with nature through a different approach which exceeds the limited framework of monetary competitive economies based mainly on the principles of profit maximization and selfish individual interests, social order based on the principles of subsidiarity and solidarity. Economy must remain at a human level, it must humanize. As for solidarity as a principle of the economic life, this represents a reversal of the principle of capitalist competition. Solidarity requires collaboration, not competition, and its purpose is not profit, but the common good. An economy based on altruism and not on selfishness.\nThe last part is reserved to conclusions resulting from the approaches taken. Interrupting the economic growth is not the most rational solution since there are differences between countries in terms of economic, technological, scientific etc. development. The relationship between ecology and economy focuses mainly on 3 directions: The first one would specify the theoretical and methodological framework emerged from the mathematical model describing the relation between economic development and pollution, the second direction refers to the legal nature of the aspect and the last one takes into account issues related to the actual possibilities to recover and protect the environment (the development of eco-industry market).