In 1675, Burchard de Volder became the first university physics professor to introduce the demonstration of experiments into his lectures and to create a special university classroom, The Leiden Physics Theatre, for this specific purpose. This is surprising for two reasons: first, early pre-Newtonian experiment is commonly associated with Italy and England, and second, de Volder is committed to Cartesian philosophy, including the view that knowledge gathered through the senses is subject to doubt, while that deducted from first principles is (...) certain. On the surface, it is curious that such a man would bring experiments to university physics. After all, in demonstrating experiments to his students, he was teaching them through their senses, not reason. However, if we consider the institutional context of de Volder’s teaching, we come to see de Volder’s Cartesian experimentalism as representative of a certain form of pre-Newtonian Dutch Cartesian science, as well as part of a larger tradition of teaching through observation at the University of Leiden. Considering de Volder’s institutional context will help us see that de Volder’s experimentalism was not in spite of his Cartesianism, but motivated by it. This paper will describe de Volder’s physics curriculum, the Theatre in which it was taught and how his work predates similar efforts in other European Universities. The second part will consider three aspects of the culture at the University of Leiden: a tradition of teaching through observation, a particular reception of Cartesianism, and an eclectic approach to the New Philosophy. The concluding portion shows how de Volder would have understood his enterprise in Cartesian terms. (shrink)

This article focuses on the dialectic of metapsychology and hermeneutics in psychoanalysis. By combining the causal language of the former with the intentional terminology of the latter, Freud's discourse continuously transgresses narrowly conceived boundaries of scientific disciplines and places its stakes both in the humanities and the natural sciences. The argument is made that attempts to reduce psychoanalytic theory to either causal explanation or interpretation of meaning, turn it into a closed thought-system and rob it of its vitality. Moreover, it (...) is argued that although Freud understood himself to be a scientist, by eschewing the dichotomous reductionism characteristic for both his orthodox followers and critics who try to turn psychoanalysis into either a natural-science-like discipline or a hermeneutics, Freud demonstrated that his self-understanding was far more sophisticated than either of these two groups admit to. This argument is supported by a detailed discussion of Freud's epistemological premises, his conception of science and reality, and, especially, the place which Freud allocated to metapsychology in his interdisciplinary science. It is claimed that metapsychology served Freud as a double-edged sword, both enabling creative and metaphorical thought about the mind's hidden reality, and revealing the necessary incompleteness of hermeneutics. The article concludes with the claim that psychoanalysis needs metapsychology in order to pursue this dual task. (shrink)