Martin F. Meyer untersucht die Entwicklung des lebenswissenschaftlichen Denkens von den frühsten Anfängen bis zur Geburt der wissenschaftlichen Biologie bei Aristoteles. Der Autor zeigt im ersten Teil, wie sich zentrale biologische Begriffe (Leben, Lebewesen, Mensch, Tier, Pflanze) im frühgriechischen Denken, bei den Vorsokratikern und in der sogenannten Hippokratischen Medizin entwickelt haben. Im zweiten Teil beleuchtet er die Ziele, Methoden und die Systematik der von Aristoteles begründeten Biologie im Kontext seines naturwissenschaftlichen Programms.​.

Biology is the most extensive field in the Corpus Aristotelicum. In his fundamental work De anima, Aristotle tries to fix the borders of this life science. The term ψυχή has a twofold explanatory status. On the one hand, ψυχή is understood as a principle of all living beings. On the other hand, it is understood as a cause of the fact that all living beings are alive. The paper is divided into three sections. The first part shows why Aristotle discusses (...) these issues in a work entitled Περὶ ψυχῆς. Since Pythagoras and Heraclitus, ψυχή was understood as a life principle: Pythagoras believed that men, animals and plants share the same nature: they are all ἔμψυχα and they are homogenous qua ψυχή. The second part of this article deals with Aristotle’s definition of the soul in DA II: ψυχή is the principle of all living things. This establishes the external criteria to divide living and non-living beings and the internal criteria to divide living beings. The third part of this paper is concerned with the methodological consequences of this definition: the life functions are the central explanandum in Aristotle’s biology. De anima II defines such various life-functions as nourishment, sense-perception and locomotion. These capacities contour the main fields of the philosopher’s biological investigation. For Aristotle, the faculty of reproduction is a subtype of nourishment. Reproduction is the most important and most natural function of all living beings. Genetics is, therefore, the most important field in Aristotle’s biology. (shrink)

What made Socrates so special that he became the object of mockery, slander and hate? The answer in the Apology is expressed in the formula of the ‘Socratic pragma’. Plato claims that Socrates’ philosophical enterprise was a reaction to the Delphic oracle according to which no living Greek was wiser than Socrates. But does this really explain what it pretends to explain? The paper argues that this explanation tells us more about Plato’s philosophical approach than about this alleged turning point (...) in Socrates’ life. Our understanding of Socrates’ philosophical development should be based on other Platonic dialogues and the Old Comedy as well, for they inform us about the historical shift of philosophical interest from questions of physics to questions of ethics and political anthropology. (shrink)

The core thesis of the paper is that the constitution of biological science begins with a conceptual innovation with far-reaching consequences with effect up to the present: by conceiving the parts of living beings as organs (that is, as tools), Aristotle laid the foundation stone for a functional explanation of animate nature. Comparative anatomy is thus transformed from a merely descriptive to an explanatory theory. The point of the discussion is above all that a functional explanation must not be confused (...) with the sort of teleology according to which the function of an organ is understood as the cause of its existence. The first section outlines the theoretical motives that Aristotle adduces in arguing for biology (against contemporary contempt for biological research). The second step addresses the significance of the parts of animals in Aristotle's larger collection of zoological material, the Historia animalium . The third section demonstrates how in the major explanatory work De partibus animalium the term organon takes on the status of a key methodological concept. Finally, the fourth section discusses the significance of the Aristotelian determination of the organic with respect to current discourses in natural science. (shrink)