By illuminating the epistemological backgrounds of ecological-economic research, the authors lay foundations for interdisciplinary environmental research and offer guidelines for practical action. In close contact to the findings of present-day biology and economics, they demonstrate the fruitfulness as well as the shortcomings of modern science for the understanding of the proper place of humankind in nature.. Frequently, current problems in the fields of economics, ecology, politics, philosophy and biology are discussed in a kind of "dialogue" with thinkers and poets like Bacon, Quesnay, Kant, Goethe and Novalis. On the other hand, the book offers traits of the Anglo-Saxon tradition of thought: a precise, analytical approach to theory and a pragmatic approach to action. Both approaches are used by the authors complementarily. Thus the authors lay the foundations for an ecological economical and political practice which is able to tackle concrete environmental problems on an encompassing and long-term basis. This translated volume will be of great use and interest to students of ecology, economics and in particular environmental education, sustainable development and environmental ethics.