In his magnum opus Temps et Récit, Paul Ricouer diagnoses three aporias of time in Husserl’s phenomenology. Of these, the first aporia is the most decisive, as it serves as the basis for the other two aporias. The first aporia identified by Ricœur refers to the retentional and protentional extension of “now” (jetzt), the present. The aporia of the present has its origin in the contrary conceptions of time by Aristotle and St. Augustine. The Aristotelian world time, as represented chiefly (...) in the harmonious movement of celestial bodies, seems to contradict the Augustinian conception of time, namely the time of soul – as distentio animi. In Husserl’s attempt to extend the punctiform “now” by a retentional and protentional time-consciousness, Ricœur sees the inevitable aporia of a fusion of two modally opposed representations of time, namely, movement and stasis. In my paper I try to show how the first aporia of time identified by Ricœur can be seen not merely as an aporia of the present (Gegenwart), but as the aporia of the presentification (Vergegenwärtigung) of secondary memory, as represented in Husserl's propaedeutic explanation of the retentional extension of a time-object (Zeitobjekt) in subjective time-consciousness. The time-object and its intentional in-existence in consciousness, which is primarily conceived by Brentano in a temporal ‘original association’ and later by Husserl in retentional and protentional extension, is thereby extended in a mnestic and furthermore historical framework. It is primarily an attempt to establish the existential autonomy of the in-existent time-object in consciousness. Memory as an in-existent temporal phenomenon seems to contradict the tacitly assumed primacy of noesis or noetic construction in phenomenology and thus illustrate its equally autonomous presentification in consciousness in the form of a temporal aporia. (shrink)

Der tranzendentale Status der Sinnlichkeit -- Die Analogizität der Sinnlichkeit -- Die Ausdehnung der Sinnlichkeit -- Vom Subjekt zum Objekt.

The Cartesian distinction between res extensa and res cogitans initiated in the early modern age the philosophical discourse with regard to an adequate explanation of the nexus between the body and the mind. The causal closure of the body (as essentially a physical phenomenon) seems to exclude both the physical and neuronal causation of mental states and operations as well as the mental causation of bodily states and processes. The following treatise is an attempt to re-examine the causal connectivity between (...) the body and the mind and thereby to explain the mysterious interaction between these two entirely distinct modes of existence and reality. The neuronal causation of the mental existence of human beings, and conversely the mental causation of bodily volition seem to surpass the framework of ordinary causal processes which are primarily conceived as temporal sequences of causes and effects in natural phenomena. The existence of the conscious subject – as res cogitans – can hardly be reduced to momentary neuronal processes of causation; it implies a constant ontological causation in which the elementary physical and material modes of being cause constantly and ontologically the mental states and operations – which eventually form higher and unitary modes of being. This dual nature of a neuronal-ontological causation, namely the constant and existential causation of the mind and the momentary causation of mental processes (sensation, perception, cognition, thinking, etc.), seems to resolve the problem of the causal connectivity between the body and the mind. However, the ontological causation cannot be restricted to the causal interaction between the body and the mind; it can be extended to the modes of existence of the overall physical i. e. material reality. (shrink)

Die Wissenschaften entstehen und entfalten sich innerhalb von historischen Kontexten. Dabei vollzieht sich die Kontextualisierung einzelner Wissenschaftsdisziplinen durch die historisch-kontextuale Ausweitung und Abgrenzung gegenuber anderen Wissenschaftsdisziplinen. Die vorliegende Abhandlung ist ein Versuch, in der Entwicklungsgeschichte einiger fruhneuzeitlicher Wissenschaftsdisziplinen eine zweifache Wurzel der Kontextualitat festzustellen: Einen internen bzw. einen der Wissenschaftsdisziplin innewohnenden Prozess der Kontextualisierung kann man aus ihrer Entwicklungsgeschichte herleiten. Diesen gilt es von einem externen, durch aussere Faktoren und neue Erkenntnisse auf anderen Feldern bedingten Prozess der Kontextualisierung abzugrenzen. Aus (...) diesem kontextualen Wechselspiel heraus lassen sich etliche Paradigmenwechsel in der fruhen Neuzeit besser verstehen. Die Untersuchung geht von Fallstudien aus, wie sie in mechanischen und naturwissenschaftlichen Schriften von Descartes, Kepler, Galilei, Newton, Hooke und Boyle zu finden sind. (shrink)

As is generally known, Newton’s notion of universal gravitation surpassed various theories of particular gravities in the early modern age, as represented mainly by Kepler and Hooke. In his seminal work “Hooke and the Law of Universal Gravitation: A Reappraisal of a Reappraisal” Richard S. Westfall argues that Hooke could not reach beyond the concept of spatially bounded particular gravities, as he deployed the method of analogy between the material principle of congruity and incongruity and the extension of gravitational spheres (...) and their action at a distance. However, the doctrine of universal gravitation does not exclude the nature of particular gravities; it is predicated on the notion of an infinite expansion of individual-gravitational spheres and their uniform nature, namely the mutual and centripetal attraction. In my treatise I attempt to reinvestigate the nature and structure of gravitation, as established historically in the framework of Newtonian Classical Mechanics, by a method of structural intuition. It examines how the structural intuition, as represented in the celestial-mechanical intuitions of Hooke and Kepler, could unfold into an innovative process within the context of early modern mechanical philosophy, attaining thus a historical significance and legitimacy as against the prevailing Newtonian method of geometric-mathematical axiomatization of mechanical principles. It also explores the actual demonstrative features of the tidal phenomenon with regard to its lunar- and solar-gravitational causation, which has been considered to date to be an important piece of empirical evidence for the theory of universal gravitation. (shrink)