This paper proposes a basic revision of the understanding of teleology in biological sciences. Since Kant, it has become customary to view purposiveness in organisms as a bias added by the observer; the recent notion of teleonomy expresses well this as-if character of natural purposes. In recent developments in science, however, notions such as self-organization (or complex systems) and the autopoiesis viewpoint, have displaced emergence and circular self-production as central features of life. Contrary to an often superficial reading, Kant gives (...) a multi-faceted account of the living, and anticipates this modern reading of the organism, even introducing the term self-organization for the first time. Our re-reading of Kant in this light is strengthened by a group of philosophers of biology, with Hans Jonas as the central figure, who put back on center stage an organism-centered view of the living, an autonomous center of concern capable of providing an interior perspective. Thus, what is present in nuce in Kant, finds a convergent development from this current of philosophy of biology and the scientific ideas around autopoeisis, two independent but parallel developments culminating in the 1970s. Instead of viewing meaning or value as artifacts or illusions, both agree on a new understanding of a form of immanent teleology as truly biological features, inevitably intertwined with the self-establishment of an identity which is the living process. (shrink)

Rudolf Leuckart's 1851 pamphlet Ueber den Polymorphismus der Individuen (On the polymorphism of individuals) stood at the heart of naturalists' discussions on biological individuals, parts and wholes in mid-nineteenth-century Britain and Europe. Our analysis, which accompanies the first translation of this pamphlet into English, situates Leuckart's contribution to these discussions in two ways. First, we present it as part of a complex conceptual knot involving not only individuality and the understanding of compound organisms, but also the alternation of generations, the (...) division of labor in nature, and the possibility of finding general laws of the organic world. Leuckart's pamphlet is important as a novel attempt to give order to the strands of this knot. It also solved a set of key biological problems in a way that avoided some of the drawbacks of an earlier teleological tradition. Second, we situate the pamphlet within a longer trajectory of inquiry into part-whole relations in biology from the mid-eighteenth century to the present. We argue that biological individuality, along with the problem-complexes with which it engaged, was as central a problem to naturalists before 1859 as evolution, and that Leuckart's contributions to it left a long legacy that persisted well into the twentieth century. As biologists' interests in part-whole relations are once again on the upswing, the longue durée of this problem merits renewed consideration. (shrink)

Rudolf Leuckart’s 1851 pamphlet Ueber den Polymorphismus der Individuen stood at the heart of naturalists’ discussions on biological individuals, parts and wholes in mid-nineteenth-century Britain and Europe. Our analysis, which accompanies the first translation of this pamphlet into English, situates Leuckart’s contribution to these discussions in two ways. First, we present it as part of a complex conceptual knot involving not only individuality and the understanding of compound organisms, but also the alternation of generations, the division of labor in nature, (...) and the possibility of finding general laws of the organic world. Leuckart’s pamphlet is important as a novel attempt to give order to the strands of this knot. It also solved a set of key biological problems in a way that avoided some of the drawbacks of an earlier teleological tradition. Second, we situate the pamphlet within a longer trajectory of inquiry into part-whole relations in biology from the mid-eighteenth century to the present. We argue that biological individuality, along with the problem-complexes with which it engaged, was as central a problem to naturalists before 1859 as evolution, and that Leuckart’s contributions to it left a long legacy that persisted well into the twentieth century. As biologists’ interests in part-whole relations are once again on the upswing, the longue durée of this problem merits renewed consideration. (shrink)

In the Appendix to the Transcendental Dialectic, Kant formulates teleological principles, or rather ideas, and explicates them referring to concrete examples of natural science such as chemistry, astronomy, biology, empirical psychology, and physical geography. Despite the increasing interest in the systematic relevance of the Appendix to the Transcendental Dialectic and its importance for Kant’s conception of natural science, the numerous historical sources for the regulative use of reason have not yet been investigated. One that is very central is Maupertuis’ principle (...) of least action. In 1781, Kant transformed teleology into heuristics and methodology, but in doing so, he partially develops a teleology which was disqualified by Maupertuis because its starting point lies in the construction of animals or plants, the structure of the earth, and the immensity of the celestial bodies. Based on Maupertuis’ principle of action, it can be shown that the Appendix forms a systematic interface between Universal Natural History and Theory of the Heavens and Critique of Judgement which allows the reconstruction of Kant’s regulative use of reason and its specific status in the context of natural science and his critical appraisal of Maupertuis. (shrink)

The phenomenon of self-healing forces has again and again challenged doctors in the different historical periods of medical science. They relied on effects of self-healing forces in diagnosis and therapy. They also tried to explain these effects based on the current model of organism. The understanding of this phenomenon has always influenced the understanding of therapy and played a role in defining the concept of health and disease. In the 17th and 18th century the idea of self-healing force was interpreted (...) as a phenomenon related to the organic forces, whereas in the 19th century the explanation was reduced to a materialistic mechanism. Nowadays the knowledge of heath-shock-proteins open the way of a new understanding of the organic defense mechanisms. (shrink)

Kant entwickelt in der Kritik der Urteilskraft eine philosophische Ästhetik, eine Theorie der organischen Natur. Die beiden scheinbar heterogenen Gegenstandsbereiche sind durch das Prinzip der reflektierenden Urteilskraft, die Idee der Zweckmäßigkeit, verbunden, die der Mensch sowohl bei der Reflexion über die schönen Gegenstände der Natur und der Kunst als auch bei seiner Erforschung der organischen Natur zugrunde legt. Da sich alle Zwecke zuletzt auf den Endzweck des Menschen als moralisches Wesen beziehen, übersteigt die dritte „Kritik" schließlich die Bereiche von Kunst (...) und Natur und berührt Fragen der Moralphilosophie und der Moraltheologie. Zusätzlich entdeckt Kant im subjektiven Vermögen der Urteilskraft jenes Bindeglied unter den menschlichen Gemütskräften, das einen architektonischen Übergang zwischen den Naturbegriffen des Verstandes in der ersten und dem Freiheitsbegriff der Vernunft in der zweiten „Kritik" ermöglicht und die theoretische und die praktische Philosophie in einem einzigen philosophischen System vereinigt. Der vorliegende kooperative Kommentar bietet eine textnahe, fortlaufende Interpretation der „Kritik der Urteilskraft". Für die 3. Auflage anlässlich des 300. Jubiläums Immanuel Kants wurden alle Beiträge überarbeitet und auf den neuesten Forschungsstand gebracht. Mit Beiträgen von: K. Ameriks, J. Bojanowski, R. Brandt, G. Cunico, M. Foessel, E. Förster, C. Fricke, H. Ginsborg, P. Giordanetti, I. Goy, O. Höffe, A. Kablitz, G. Kohler, S. Mathisen, B. Recki, J. Rivera de Rosales, S. Roth und E. Watkins. (shrink)

By means of a survey of the papers given at the XIX Symposium of theSociety for History of Sciences on the „Idea of Purposiveness in the History of the Sciences“, Mai 28–30, 1981 in Bamberg, West Germany, it is demonstrated that in the course of the history of science teleological thinking in its traditional form is increasingly eliminated from the sciences. This process culminates in the attempt to rehabilitate teleological thinking by means of a reconstruction of Aristotelian philosophy using the (...) tools of modern natural science. The question arises whether this signifies the end of teleological thinking or a new direction of genuinely teleological thought. (shrink)

Do plants represent according to Kant? This is closely connected to the question of whether he held plants are alive, because he explains life in terms of the faculty to act on one’s own representations. He also explains life as having an immaterial principle of self-motion, and as a body’s interaction with a supersensible soul. I argue that because of the way plants move themselves, Kant is committed to their being alive, to their having a supersensible ground of their self-activity, (...) and to their having desires (although these are not conscious). This has important ramifications for Kant’s teleology and philosophy of mind. (shrink)