•  1461
    Ancient Modes of Philosophical Inquiry
    History of Philosophy & Logical Analysis 23 (1): 3-20. 2020.
    At least since Socrates, philosophy has been understood as the desire for acquiring a special kind of knowledge, namely wisdom, a kind of knowledge that human beings ordinarily do not possess. According to ancient thinkers this desire may result from a variety of causes: wonder or astonishment, the bothersome or even painful realization that one lacks wisdom, or encountering certain hard perplexities or aporiai. As a result of this basic understanding of philosophy, Greek thinkers tended to rega…Read more
  •  944
    This paper sets out to evaluate the claim that Aristotle’s Assertoric Syllogistic is a relevance logic or shows significant similarities with it. I prepare the grounds for a meaningful comparison by extracting the notion of relevance employed in the most influential work on modern relevance logic, Anderson and Belnap’s Entailment. This notion is characterized by two conditions imposed on the concept of validity: first, that some meaning content is shared between the premises and the conclusion, …Read more
  •  692
    It is commonly assumed that Aristotle thinks that his claim that being exhibits a category-based pros hen structure, which he introduces to obviate the problem of categorial heterogeneity, is sufficient to defend the possibility of a science of being qua being. We, on the contrary, argue that Aristotle thinks that the pros hen structure is necessary only, but not sufficient, for this task. The central thesis of our paper is that Aristotle, in what follows 1003b19, raises a second problem for the…Read more
  •  97
    Aristotle on Kind‐Crossing
    Oxford Studies in Ancient Philosophy 54 107-158. 2018.
    This paper concerns Aristotle's kind‐crossing prohibition. My aim is twofold. I argue that the traditional accounts of the prohibition are subject to serious internal difficulties and should be questioned. According to these accounts, Aristotle's prohibition is based on the individuation of scientific disciplines and the general kind that a discipline is about, and it says that scientific demonstrations must not cross from one discipline, and corresponding kind, to another. I propose a very diff…Read more
  •  26
    This dissertation deals with an important topic in the history of the theory of scientific knowledge, a theory which became the paradigm for science for the next two millennia. It is well known that Aristotle characterized scientific knowledge with two conditions: first, it must be necessary; and secondly, knowledge is only scientific if the reason or cause of what we know is revealed. To give an example, the theorem that the interior angle-sum of a triangle is 180° is a necessary truth. In orde…Read more
  •  23
    De logische geometrie van Johannes Buridanus' modale achthoek
    Tijdschrift Voor Filosofie 79 (2): 217-238. 2017.
    In order to elucidate his logical analysis of modal quantified propositions (e.g. ‘all men are necessarily mortal’), the 14th century philosopher John Buridan constructed a modal octagon of oppositions. In the present paper we study this modal octagon from the perspective of contemporary logical geometry. We argue that the modal octagon contains precisely six squares of opposition as subdiagrams, and classify these squares based on their logical properties. On a more abstract level, we show that…Read more
  •  15
    The Megaric Possibility Paradox
    Apeiron 57 (1): 111-137. 2024.
    In Metaphysics Theta 3 Aristotle attributes to the Megarics and unknown others a notorious modal thesis: (M) something can φ only if it is φ-ing. Aristotle does not tell us what motivated (M). Almost all scholars take Aristotle’s report to indicate that the Megarics defended (M) as a highly counterintuitive doctrine in modal metaphysics. But this reading faces several problems. First: what would motivate the Megarics to hold such a counterintuitive view? The existing literature tries, in various…Read more
  •  1
    Dieser Band wirft ein neues Licht auf Byzanz - als geographischen, aber vor allem als kulturellen Knotenpunkt. Denn wie kaum eine andere Region ist Byzantium über gut ein Jahrtausend durch seine ebenso zentrale wie fragile geographische Lage, aber auch durch sein Prestige wichtig für die Begegnung von Kulturen, Personen und Institutionen rund um das Mittelmeer. Hierbei stellt sich aus byzantinischer Perspektive die "antike" und "mittelalterliche" Welt als ein in wesentlichen Zügen kontinuierlich…Read more