Keith R. Peterson

This is a translation of an early essay by the German philosopher Nicolai Hartmann (1882–1950). In this 1923 essay Hartmann presents many of the fundamental ideas of his new critical ontology. He summarizes some of the main points of his critique of neo-Kantian epistemology, and provides the point of departure for his new approach in an extensive criticism of the errors of the classical ontological tradition. Some of these errors concern the definition of an ontological category or principle, and others concern the relations among categories themselves. The outline for the new ontology is sketched through the correctives Hartmann appends to the treatment of each error, prefiguring his mature ontological system.

Nicolai Hartmann contributed significantly to the revitalization of the discipline of ontology in the early twentieth century. Developing a systematic, post-Kantian critical ontology ‘this side’ of idealism and realism, he subverted the widespread impression that philosophy must either exhaust itself in foundationalist epistemology or engage in system-building metaphysical excess. This essay provides an introduction to Hartmann’s approach in light of the recent translation of his early essay ‘How is Critical Ontology Possible?’ (1923) In it Hartmann criticizes both the pretensions of epistemology as well as the principal errors of classical ontology, and he proposes a series of correctives that lead to his development of a highly original and elaborate stratified categorial ontology. This introduction explains the most important errors of the ‘old’ ontology, his correctives to them, and further fleshes out these correctives with reference to his mature ontological work.

This is a translation of Nicolai Hartmann’s article “Der Megarische und der Aristotelische Möglichkeitsbegriff: ein Beitrag zur Geschichte des ontologischen Modalitätsproblems,” first published in 1937. In this article, Hartmann defends an interpretation of the Megarian conception of possibility, which found its clearest form in Diodorus Cronus’ expression of it and according to which “only what is actual is possible” or “something is possible only if it is actual.” Hartmann defends this interpretation against the then dominant Aristotelian conception of possibility, based on the opposition between dynamis and energeia, and according to which there is always an open multiplicity of simultaneous “possibilities,” the outcome of which remains undetermined. Since, according to Hartmann, reality suffers no indetermination, the Megarian conception of possibility is an account of real possibility, whereas the Aristotelian one is merely an account of epistemic possibility (Frédéric Tremblay).

Some contemporary philosophers have called for a “new realism” in philosophical ontology. Hartmann’s works provide some of the richest resources upon which recent realists might draw for both inspiration and argument. In this brief exploration I touch on some key concepts and arguments from a few of the players in this “ontological turn,” including Meillassoux, Brassier, and Ferraris, and show how many of them were already clearly articulated in Hartmann’s works. I’ll also describe and comment on Hartmann’s arguments concerning the “thing in itself,” which he considers a key “critical” concept of his new ontology. His treatment of this issue demonstrates the sophistication—and, perhaps, superiority—of Hartmann’s approach.

The imposing scope and penetrating insights of German philosopher Nicolai Hartmann’s work have received renewed interest in recent years. The Neo-Kantian turned ontological realist established a philosophical approach unique among his peers, and it provides a wealth of resources for considering contemporary philosophical problems. The chapters included in this volume examine his ethics, ontology, aesthetics, philosophy of mind, and philosophy of nature. They explore his ontology of values, autonomy and human enhancement, and law; his theory of levels of reality, space-time and geometry, the categories of temporality, causality, and “life,” the question of realism, and social ontology. Others take inspiration from his aesthetic theory, ideas about education,and his embrace of the Socratic pathos of wonder. They bring his philosophy into conversation with that of his contemporaries, including Roman Ingarden and Konrad Lorenz’s appropriation of Hartmann, as well as with the history of philosophy, including Plato’s theory of recollection, pre-Socratic philosophy, and that of his Russian teacher Nikolai Lossky. Those familiar with Hartmann’s wide-ranging systematic philosophy will benefit from these new engagements with his work, and those new to it will find them relevant to a number of current philosophical debates.

This chapter argues, provocatively, that among all those who proposed a new ontology during the general revival of ontology at the start of the twentieth century, Hartmann was the only thinker to have actually developed one, and one that may fulfill the promise of an ontology of nature. Hartmann’s critical ontology effectively challenges anthropocentrism because his conception of a stratified reality acknowledges the asymmetrical dependence of humans on nonhuman biotic and abiotic nature. Given that, for Hartmann, all relations (organic, psychological, material, cultural, etc.) count, his ontology can form the non-reductive basis for a critical environmental philosophy.

It is no exaggeration to say that of the early 20th century German philosophers who claimed to establish a new ontology, former neo-Kantian turned realist Nicolai Hartmann is the only one to have actually followed through. "Ontology: Laying the Foundations" deals with "what is insofar as it is," and its four parts tackle traditional ontological assumptions and prejudices and traditional categories such as substance, thing, individual, whole, object, and phenomenon; a novel redefinition of existence and essence in terms of the ontological factors Dasein and Sosein and their interrelations; an analysis of modes of "givenness" and the ontological embeddedness of cognition in affective transcendent acts; and a discussion of the status of ideal being, including mathematical being, phenomenological essences, logical laws, values, and the interconnections between the ideal and real spheres. Hartmann’s work offers rich resources for those interested in overcoming the human-centeredness of much 20th century philosophy. Hartmann’s work offers rich resources for those interested in overcoming the human-centeredness of much 20th century philosophy.

In A World Not Made for Us, Keith R. Peterson provides a broad reassessment of the field of environmental philosophy, taking a fresh and critical look at three classical problems of environmentalism: the intrinsic value of nature, the need for an ecological worldview, and a new conception of the place of humankind in nature. Peterson makes the case that a genuinely critical environmental philosophy must adopt an ecological materialist conception of the human, a pluralistic value theory that emphasizes the need for value prioritization, and a stratified categorical ontology that affirms the basic principle of human asymmetrical dependence on more-than-human nature. Integrating environmental ethics with the latest work in political ecology, Peterson argues it is important to understanding that the world is not made for us, and that coming to terms with this fact is a condition for survival in future human and more-than-human communities of liberation and solidarity.

Originally a student of Marburg Neo-Kantianism, Nicolai Hartmann departed from this tradition to become one of the leading German philosophers of the first half of the twentieth century. He wrote on all the major fields of philosophy, including the philosophy of history, epistemology, ethics, and aesthetics, although his central interest was ontology. He held teaching posts in Marburg, Cologne, Berlin, and Göttingen, and was president of the German Philosophical Association after the Second World War. Perhaps unique among his peers, he spearheaded the resurgence of ontology by developing a pluralistic, humanistic realism that attempted to do justice to both the sciences and the humanities.Over the last...