In his Commentary on Ptolemy’s Harmonics, Porphyry debunks Ptolemy’s quantitative theory of pitches by demonstrating that pitches are qualitative attributes of sound. I argue that Porphyry’s main concern is to save the phenomenological dimension of sound while preserving the possibility of a quantitative analysis of music. I show how he draws on the Aristotelian tradition to develop a theory of pitches as emergent properties that covary with some underlying quantitative features without being reducible to them. Porphyry offers an original and (...) compelling solution to the classic problem of how to provide a quantitative analysis of a qualitative phenomenon. (shrink)

At Statesman (Plt.) 291a–c and 303c–d, Plato compares the so-called statesmen of all existing constitutions to a motley crew of lions, centaurs, satyrs, and other beasts, and the entire section of the Statesman devoted to law and constitutions (291c–303c) to a satyr-play of sorts. This paper argues that these thought-provoking images are best understood as literary devices which, in addition to other dramatic elements in the Theaetetus and Sophist, help to bolster the unity of the Theaetetus-Sophist-Statesman trilogy and its apologetic (...) agenda concerning Socrates. (shrink)

Exeinai bedeutet, dass es jemandem offensteht, eine bestimmte Handlung zu tun. Damit verbinden sich die Vorstellungen des Handlungsspielraums, des Anders-Könnens und des Anders-gekonnt-Habens wie auch die Vorstellung, selbst über sein Tun und Lassen bestimmen zu können. Exousia ist eng verknüpft mit eleutheria, Freiheit, und seit Aristoteles ist exeinai auch mit dem Begriff ep’ autō(i): etwas liegt bei einem, verbunden. Der Aufsatz bietet die erste detaillierte Untersuchung der Verwendung, der begrifflichen Verbindungen und der Signifikanz von exeinai und exousia. Damit fällt neues (...) Licht auf eine frühe Phase in der Geschichte der Freiheitsidee. (shrink)

Discussions of Aristotle’s Metaphysics Z tend to treat it either as an independent treatise on substance and essence or as preliminary to the main conclusions of the Metaphysics. I argue instead that Z is central to Aristotle’s project of first philosophy in the Metaphysics: the first philosopher seeks the first causes of being qua being, especially substances, and in Z, Aristotle establishes that essences or forms are the first causes of being of perceptible substances. I also argue that the centrality (...) of Z to first philosophy is compatible with its status as theology. (shrink)

The principles governing elemental composition, variation, and change in Plato’s Timaeus appear to be incompatible, which has led commentators to prioritize some of the principles to the exclusion of others. Call this seeming incompatibility the problem of isomorphic variants. In this paper, I develop the theory of proportionate atomism as a solution to this problem. Proportionate atomism retains the advantages of rival interpretations but allows the principles of material composition, variation, and change to combine into an internally coherent and explanatorily (...) powerful atomic physics. (shrink)