Abstract
This thesis deals with the ecological crisis in a broader context. It is based on the premise that this crisis is a crisis of values and can be considered as a result of gradual alienation of humans from the nature. The current ecological crisis is the result of this process. Consequently if the existence of mankind on the planet is supposed to be sustainable, it is necessary to completely rethink the human relationship to the outside world, especially the nature. Its reduction to a mere source of resources is unacceptable. Based on the change of the outlook on the nature changes in social structures can take place, especially in the economic system. In this context the idea of sustainable development, with its emphasis on intergenerational equity, the rational use of natural resources and respect for all life forms seems promising