The present volume contains 14 contributions presented at a colloquium on "Structure and Approximation in Physical Theories" held at Osnabruck in June 1980. The articles are presented in the revised form written after the colloquium and hence also take account of the results of the discussion at the colloquium. It is a striking feature that the problem of approximation in physical theories has only recently found some attention in the philosophy of science, although the working physicist is con stantly confronted (...) with those questions. No interesting theory of exact science exactly fits its experimental data; almost every relation between different theories is an approximate one. There fore an adequate reconstruction of physical theories must take into account and conceptualize the moment of approximation. The majority of the articles in this book is centered around this subject. There are at least two elaborate, 'structuralistic' approaches to the formalization of physical theories in which the aspect of approximation has been incorporated: the approach due to P. Suppes, J. Sneed, W. Stegmuller ("S-approach") and the approach of G. Lud wig and his co-workers ("L-approach"). The articles in this book correspondingly fall into three classes: presentation, elaboration and critique of the L-approach [Hartkamper/Schmidt, Ludwig, Neumann, Werner, Schmidt, Mayr, Kamiah, Majer, Grafe] or of the S-approach [Moulines, Balzer, Cooke], and articles referring to both approaches or concerned with related matters [Scheibe, Pfarr, Castrigiano]. Of course, this is only a rough classification and each article must be appraised in its own right. (shrink)

Seven unknown letters from 1823 to 1831 are published. The famous discoverer of the mammal's egg and founder of the modern embryology Karl Ernst von Baer (1792–1876), born as a German in Estonia and then anatomist and zoologist at Königsberg University, wrote them to his publisher Ludwig F. Froriep in Weimar and his son and successor. Robert F. Baer offered his co-work with a dictionary of natural history (which he criticized), he proposed a map of all research voyages everywhere in (...) the world, and he sent a few small papers about local birds. To Robert F. Baer gave some recommendations concerning his career; he asked for details of a death elephant, and he told that they were awaiting the cholera. (shrink)

English summary: This volume presents eight contributions by representatives of classical philology, church history, philosophy and religious studies, dealing with elucidating the possible relations between Origen the Christian theologian and Origen the Platonic philosopher. Thus, the volume contains discussions of the - not yet conclusively answered - question of whether the Christian Origen and the Platonic Origen might in fact have been one and the same person; it also investigates the Platonic traits of the Christian Origen, which are easily recognizable (...) in some of his works, and the reception both the philosopher and the Christian Origen had in late antiquity, in authors such as the Platonists Porphyry and Proclus as well as the Christian theologian Eusebius of Caesarea. German description: Der hier vorgelegte Band versammelt insgesamt acht Beitrage (von Vertretern der Klassischen Philologie, der Kirchengeschichte, der Philosophie und der Religionswissenschaft), die sich mit den moglichen Beziehungen zwischen dem christlichen Theologen Origenes und dem platonischen Philosophen Origenes beschaftigen. Dabei geht es nicht nur um die (immer noch nicht abschliessend beantwortete) Frage, ob der Christ Origenes und der Platoniker Origenes vielleicht sogar dieselbe Person sind, sondern auch um den (in manchen Werken deutlich erkennbaren) Platonismus des christlichen Theologen Origenes und die Rezeption dieses oder dieser Origene(i)s in der Spatantike: bei den Platonikern Porphyrios und Proklos und bei dem christlichen Theologen Eusebius von Caesarea. Mit Beitragen von: Balbina Babler, Peter Gemeinhardt, Jens Halfwassen, Theo Kobusch, Winrich Lohr, Heinz-Gunther Nesselrath, Christoph Riedweg, Ilinca Tanaseanu-Dobler, Andrea Villani. (shrink)

Romano Guardini gilt als einer der massgeblichen christlichen Denker des 20. Jahrhunderts. Seine Schriften, philosophische und theologische Abhandlungen, aber auch zahlreiche meditative und spirituelle Texte, haben eine weltweite Verbreitung gefunden und pragen ungebrochen bis heute Generationen von Leserinnen und Lesern. Der vorliegende Band, der aus Anlass des 50. Todestages Romano Guardinis am 1. Oktober 2018 sowie zur Eroffnung des Seligsprechungsprozesses erscheint, versammelt Beitrage namhafter Autorinnen und Autoren. Aus unterschiedlichen Perspektiven widmen sie sich insbesondere Guardinis Buch "Der Herr" uber Person und (...) Botschaft Jesu Christi, aber beispielsweise auch Aspekten der Gottesfrage, der Ethik oder des Gebets. Eine Fundgrube fur alle, die sich der Person und dem Denken Guardinis neu nahern mochten. Mit Beitragen von Hanna-Barbara Gerl-Falkovitz, Jean Greisch, Karl Kardinal Lehmann (+), Peter Reifenberg, Marius Reiser, Peter Schallenberg, P. Kosmas Lars Thielmann OCist, Karl-Heinz Wiesemann. (shrink)