Summary Boltzmann's principle is part of classical physics, and one of the corner-stones of Planck's quantum theory. It is shown, why Planck's theory of radiation can be derived from this principle without abandoning classical physics, if due regard is taken of atomism. Finally, there is given an outline of a quantum theory completely based on statistical axioms without any appeal to nonclassical physical principles.

Boltzmann's principle is part of classical physics, and one of the corner-stones of Planck's quantum theory. It is shown, why Planck's theory of radiation can be derived from this principle without abandoning classical physics, if due regard is taken of atomism. Finally, there is given an outline of a quantum theory completely based on statistical axioms without any appeal to nonclassical physical principles.

Ulrich Meyer defends a novel theory about the nature of time, and argues against the consensus view that time and space are fundamentally alike. He presents the first comprehensive defense of a 'modal' account, which emphasizes the similarities between times and possible worlds in modal logic, and is easily reconciled with the theory of relativity.

"...wenn wir etwas näher zusehen und den Aufbau der exakten Wissenschaft einer genaueren Prüfung unterziehen, dann werden wir sehr bald gewahr, daß das Gebäude eine gefährlich schwache Stelle besitzt, und diese Stelle ist das Fundament. Dem Bau fehlt eine von vornherein nach allen Richtungen hin gesicherte, von äußeren Stürmen nicht zu erschütternde Grundlage, oder mit anderen Worten: es gibt für exakte Wissenschaft kein Prinzip von so allgemeiner Gültigkeit und zugleich von so bedeutsamem Inhalt, daß es ihr als ausreichende Unterlage dienen (...) kann. Wohl rechnet sie allenthalben mit Maß und Zahl und trägt daher mit vollem Recht ihren stolzen Namen; denn die Gesetze der Logik und der Mathematik müssen wir ohne Zweifel als zuverlässig betrachten. Aber auch die schärfste Logik und die genaueste mathematische Rechnung können kein einziges fruchtbares Ergebnis zeitigen, wenn es an einer sicher zutreffenden Voraussetzung fehlt. Aus nichts läßt sich nichts folgern." (Max Planck, S. 5 f. in diesem Buch) Der deutsche Physiker Max Planck (* 23. April 1858 in Kiel, † 4. Oktober 1947 in Göttingen) gilt als Begründer der Quantenphysik. Im Jahr 1919 wurde ihm der Nobelpreis für Physik für das Jahr 1918 verliehen. 1941 hielt Planck einen vielbeachteten Vortrag über das Fundament der "exakten" Wissenschaften, zu denen auch die Pysik gezählt wird. Lange vergriffen liegt sein Vortrag "Sinn und Grenzen der exakten Wissenschaft" nun in einer ungekürzten Neuausgabe, ergänzt um einen illustrierten Anhang, wieder als Einzelpublikation vor. Max Planck. Sinn und Grenzen der exakten Wissenschaft. Vortrag gehalten im November 1941. Erstdruck: Johann Ambrosius Barth – Verlag, Leipzig 1942. Durchgesehener Neusatz, der Text dieser Ausgabe folgt der siebenten Auflage, Johann Ambrosius Barth – Verlag, Leipzig 1965. Für die Neuausgabe 2021 mit sieben Illustrationen versehen. Gebundene Ausgabe - Hardcover - mit Lesebändchen. Neuausgabe, LIWI Verlag, Göttingen 2021. LIWI Literatur- und Wissenschaftsverlag. (shrink)

Acknowledgements Andrea Scarantino, Nicholas Shea, Mark Sprevak, and three anonymous referees provided incisive and constructive comments, for which I am very grateful. In 2012, earlier versions of this paper were delivered in Edinburgh, at the Joint Session in Stirling, and at a workshop on natural information in Aberdeen. I thank participants for their feedback.

This paper argues that modal realism has a problem with mathematical impossibilities. Due to the peculiar way it treats both propositions and mathematical objects, modal realism cannot distinguish the content of different mathematically impossible beliefs. While one might be happy to identify all logically impossible beliefs, there are many different mathematically impossible beliefs, none of which is a belief in a logical contradiction. The fact that it cannot distinguish these beliefs speaks against adopting modal realism.

The discourse on climate politics so far is an expert and elitist discourse in which peoples, societies, citizens, workers, voters and their interests, views and voices are very much neglected. So, in order to turn climate change politics from its head onto its feet you have to take sociology into account. There is an important background assumption which shares in the general ignorance concerning environmental issues and, paradoxically, this is in corporated in the specialism of environmental sociology itself — this (...) is the category of ‘the environment’. If ‘the environment’ only includes everything which is not human, not social, then the concept is sociologically empty. If the concept includes human action and society, then it is scientifically mistaken and politically suicidal. (shrink)

Morality and economic rationality: integrative economic ethics as the rational ethics of economic activity; Part II. Reflections on the Foundations of Economic ...

Toen Ulrich Libbrecht vanaf de jaren 1970 Vlaanderen en Nederland inspireerde met ‘oosterse wijsheid voor de westerse mens’ was dit pionierswerk. Ondertussen heeft de globalisering zich verder voltrokken, is boeddhisme en meditatie geen exotisme meer en is China dichterbij gekomen. Hoe kijkt de filosoof nu tegen deze ontwikkelingen aan? Dit boek is ontstaan uit gesprekken waarin Libbrecht op een meesterlijke wijze oosterse en westerse inzichten integreert tot een nieuw antwoord op actuele vragen en universele thema’s. Hierin benadrukt hij de (...) waarde van natuur, wetenschap en religieus bewustzijn in de betekenis van re-ligare: herverbinden. In dit boek zet hij geen theorie uiteen, maar neemt de lezer mee op de boeiende weg van het denken, doortrokken van ontroering en een rijke levenservaring. (shrink)

Modern science is, to a large extent, a model-building activity. But how are models contructed? How are they related to theories and data? How do they explain complex scientific phenomena, and which role do computer simulations play here? These questions have kept philosophers of science busy for many years, and much work has been done to identify modeling as the central activity of theoretical science. At the same time, these questions have been addressed by methodologically-minded scientists, albeit from a different (...) point of view. While philosophers typically have an eye on general aspects of scientific modeling, scientists typically take their own science as the starting point and are often more concerned with specific methodological problems. There is, however, also much common ground in middle, where philosophers and scientists can engage in a productive dialogue, as the present volume demonstrates. (shrink)

In this fascinating autobiography from the foremost genius of twentieth-century physics, Max Planck tells the story of his life, his aims, and his thinking. Published posthumously, the papers in this volume were written for the general reader and make accessible his scientific theories as well as his philosophical ideals, including his thoughts on ethics and morals. Max (Karl Ernst Ludwig) Planck was a German physicist and philosopher known for his quantum theory, for which he won the Nobel Prize (...) in Physics in 1918. Planck was born in Kiel, Germany, in 1858 to an academic family, and he valued education from a young age. He attended the Universities of Munich and Berlin to study physics under the great scientific leaders Kirchhoff and Helmholtz. His early work mainly focused on the study of thermodynamics, and in 1900 he published a paper on his quantum theory that would change the face of modern physics. Planck worked as a professor at Berlin University his entire life, and he also served as the president of the Kaiser Wilhelm Society for the Promotion of Science. During World War II, Planck experienced great hardships while he remained in Germany but openly opposed the Nazi regime. One of his two sons was executed during this time for an unsuccessful attempt on Hitler's life, and Planck's home in Berlin was eventually bombed. He continued to write on physics and philosophy until his death in 1947. (shrink)

Im Hörsaal zeigt sich das europäische Philosophieren jederzeit mündlich und beweglich. Viele pilgerten zwischen 1970 und 1984 nach Paris, wo Michel Foucault dreizehn umfangreiche Vorlesungen hielt. Sein Publikum erstaunte vor dem Wechsel an Themen, Texten und Bildern. Foucault sprach über Machtverhältnisse, Strafregime und diskursive Ordnungen, er thematisierte die Sexualität, das Wahrsagen und wie gut zu leben sei. Seine Anekdoten und Geschichten faszinieren noch in den gedruckten Transkriptionen aller 150 Vorlesungsstunden. Der Essay »Foucault im Hörsaal« versucht den Nachvollzug des mündlichen Foucault (...) und testet den Zusammenhang der mündlich vorgetragenen Gedankenentwicklung. Warum taucht dort - und nur dort - die Figur des Ödipus auf? Es gibt viele rote Fäden im Vortrag Foucaults, der explizit experimentierend ist und sich vom Charakter seiner Bücher deutlich absetzt. Foucault hat Vorlesungen eher wie politische Interventionen als lebhafte Ansprachen gestaltet; er adressiert seine Zuhörer als Zeitgenossen mit offenem Erwartungshorizont. -- Page 4 of cover. (shrink)

This book answers questions about secularization: Does it dissolve religion, or transform it into faith in a universally valid value? Is it restricted to the west or can it occur everywhere? Using ideas of Max Weber, the book conceives secularization as a process comparable to the rational development of science and production. What is the value secularization propagates? Sifting historical texts, Steinvorth argues the value is authenticity, to be understood as being true to one's talents developed in activities that are (...) done for their own sake and provide life with meaning, and as unconditionally commanded. How can a value be unconditionally demanded? This question leads to an investigation of the self that combines Kant's ideas on the conditions of the possibility of experience with modern brain science, and to the metaphysical deliberation whether to prefer a world with creatures able to do both good and evil to one without them. It is not enough, however, to point to facts. We rather need to understand what secularization, religion and their possible rationality consist inches Max Weber's sociology of religion has provided us with the conceptual means to do so, which this book develops. Secularization is rediscovered as the same progress of rationality in the sphere of religion that we find in the development of the spheres of science, art, the economy and politics or public affairs. It proves to be the perfection rather than the dissolution of religion - a perfection that consists in recognizing authenticity as the successor of the absolute of religion. (shrink)

In Hermann Samuel Reimarus (1694–1768): Classicist, Hebraist, Enlightenment Radical in Disguise, Ulrich Groetsch offers a vivid portrayal of the Enlightenment radical Hermann Samuel Reimarus (1694-1768) and his debt to earlier traditions of scholarship.