Abstract

Augustyn Jakubisiak (1884-1945), Polish priest, philosopher and theologian, undertook polemics with Jan Łukasiewicz, whom he knew personally. A dispute concerning the so-called logistics (mathematical logic) and its relationship with philosophy developed between the two. The most important arguments were laid out, primarily in the following works: in the case of Jakubisiak, in the book From Scope to Content and in the case of Łukasiewicz, in the texts Logistics and Philosophy and In the Defense of Logistics. Jakubisiak criticized logistics for its anti-metaphysical, anti-theological and anti-religious attitude, which was based on neo-positivist philosophy, and led, in consequence to atheism. He also claimed that one should focus on what is concrete, avoiding idealization and abstraction (meaning the content of concepts, not their scope). Łukasiewicz defended logistics claiming that it possesses its own methods based on intellect, and is also an area of independent knowledge (but not completely detached) from philosophy, due to the fact it can consider the most important philosophical problems such as finiteness and infinity. This dispute, as the researchers identified, basically concerned the reduction of philosophy to the study of language (analytic philosophy) and initiated one of the most important discussions concerning the relationship between philosophy and logic. This debate was crucial because it also concerned questions related to fundamental metaphysical issues (naturalism – supranaturalism, rationalism – irrationalism) and epistemological issues (realism – idealism, boundaries and structure of cognition).