We take into account two areas of the logical research of the Lvov-Warsaw School. First, we consider a new approach to research in the history of logic introduced and practiced by Łukasiewicz and some of his followers. In this style of doing history of logic, the knowledge of original philosophical and logical texts was combined with competence in modern logic. This method resulted in many important discoveries both in history and in logic and philosophy. At the (...) same time, we pay attention to contemporary historical research devoted to the logic created by the School itself. In this context, we present an overview of the six papers included in the special issue ‘Logic and its History in the Lvov-Warsaw School’. These papers were presented at an international symposium, ‘History in/of the Lvov-Warsaw School’, held in October 2022 in Warsaw, and they cover various aspects of historical-logical and logical achievements of the School. They concern topics from history of ancient logic, history of modern proof theory, and the issues of applying logic to philosophy and theology in the same way as the one implemented at the Lvov-Warsaw School. (shrink)

Contains papers from a November 1995 conference held in Eastern Europe, celebrating the centenary of the Lvov-Warsaw school of analytic philosophy. Papers deal with all directions of research undertaken by Polish analytic philosophers. Special attention is paid to logic and comparisons with other philosophical movements, particularly with brentanism. Contains sections on history and comparisons, the ideas of Lesniewski, philosophy of language, logic and the foundations of mathematics, logic and philosophy, and the ontology, epistemology, and (...) philosophy of science. No index. Annotation copyrighted by Book News, Inc., Portland, OR. (shrink)

This is a collection of new investigations and discoveries on the history of a great tradition, the Lvov-Warsaw School of logic , philosophy and mathematics, by the best specialists from all over the world. The papers range from historical considerations to new philosophical, logical and mathematical developments of this impressive School, including applications to Computer Science, Mathematics, Metalogic, Scientific and Analytic Philosophy, Theory of Models and Linguistics.

One can often encounter an opinion that Polish scientific philosophy deserves to be much better known than actually is. This book is thought as a response to such a claim. The papers collected in this volume are divided into two parts: Background and Influence and History and Systematics. However, there is no sharp borderline between themes which are touched in both parts. Generally speaking, all papers of the first part relate the Lvov-Warsaw School to some philosophical (...) movements external to it whereas the papers collected in the second one focus on internal issues connected with the school . Since the Polish school of mathematical logic is much better known than the Polish analytic philosophy we decided to omit here any treatment of the former. Thus, this collection centers on purely philosophical matters. We projected this volume not as an exhaustive panorama of Polish analytic philosophy but rather as a series of essays on particular persons or topic. As a result one can find here papers on Twardowski. Ajdukiewicz, Kotarbinski, Tarski and Lukasiewicz as well as on ethics on science, nominalism, and the methodology of psychology. We hope that this book will contribute to a better knowledge and evaluation of Polish achievements in analytic philosophy. We would like to express our gratitude to Professor Leszek Nowak, the editor-in-chief of Poznan Studies in the Philosophy of the Sciences and the Humanities, who initiated the idea of the collection and helped in its preparation. (shrink)

This volume is a result of the international symposium “The Tradition of the Lvov-Warsaw School in European Culture,” which took place in Warsaw, Poland, September 2015. It collects almost all the papers presented at the symposium as well as some additional ones. The contributors include scholars from Austria, the Netherlands, Ireland, and Poland. The papers are devoted to the history and reception of the Lvov-Warsaw School, a Polish branch of analytic philosophy. They (...) present the School’s achievements as well as its connections to other analytic groups. The contributors also show how the tradition of the School is developed contemporarily. The title will appeal to historians of analytic philosophy as well as historians of philosophy in Central Europe. (shrink)

“The influence of [Kazimierz] Twardowski on modern philosophy in Poland is all-pervasive. Twardowski instilled in his students a passion for clarity [. . .] and seriousness. He taught them to regard philosophy as a collaborative effort, a matter of disciplined discussion and argument, and he encouraged them to train themselves thoroughly in at least one extra-philosophical discipline and to work together with scientists from other fields, both inside Poland and internationally. This led above all [. . .] to (...) collaborations with mathematicians, so that the Lvov school of philosophy would gradually evolve into the Warsaw school of logic [. . .]. Twardowski taught his students, too, to respect and to pursue serious research in the history of philosophy, an aspect of the tradition of philosophy on Polish territory which is illustrated in such disparate works as [Jan] Łukasiewicz’s ground-breaking monograph on the law of non-contradiction in Aristotle and [Władysław] Tatarkiewicz’s highly influential multi-volume histories of philosophy and aesthetics. [. . .] The term ‘Polish philosophy’ is a misnomer [. . .] for Polish philosophy is philosophy per se; it is part and parcel of the mainstream of world philosophy – simply because [. . .] it meets international standards of training, rigour, professionalism and specialization.”– Barry Smith, “Why Polish Philosophy does Not Exist”. (shrink)

1. First, a short anecdote. In the mid-1980s, Professor Jerzy Pogonowski gave a series of lectures entitled The Lvov-Warsaw School at the Institute of Philosophy at the Adam Mickiewicz University i...

This book presents the heritage of the Lvov-Warsaw School from both the historical and the philosophical perspective. The historical view focuses on the beginnings and the dramatic end of the School brought about by the outbreak of World War II. The philosophical view, on the other hand, encompasses a broad spectrum of issues, including logical, epistemological, axiological, and psychological problems, revealing the interdisciplinary nature of studies carried out by Kazimierz Twardowski and his students. With thirteen diverse (...) and original essays this volume is split into three parts: History, Culture and Axiology; Psychology; and Logic and Methodology. Exploring not only the history of philosophy represented by the Lvov-Warsaw school, the book also reflects on the condition of contemporary philosophy from the perspective of concepts developed by its representatives. Furthermore, the studies presented in this book delve into problems of contemporary science and its distinctive interdisciplinary character. This volume is, therefore, not only a collection of analyses of the Lvov-Warsaw School philosophy, but also an investigation into the interdisciplinarity of science and philosophy itself. (shrink)

Maria Kokoszyńska-Lutmanowa was one of the most outstanding female representatives of the Lvov-Warsaw School. After achieving her PhD in philosophy under Kazimierz Twardowski’s supervision, she was Kazimierz Ajdukiewicz’s assistant. She was also influenced by Alfred Tarski whose results in semantics she analyzed and popularized. After World War II, she got the chair of logic in University of Wrocław and she organized studies in logic in this academic center. In the 1930s, Kokoszyńska kept in contact with members (...) of the Vienna Circle and became a kind of connecting factor between Polish logicians and the Viennese group. In Poland, she presented the views of members of the Vienna Circle. In Vienna, she emphasized the results of her Polish colleagues. In the present paper, some of Kokoszyńska’s results connected with the matters discussed in the Vienna Circle are presented, namely with the problem of metaphysics, the status of logic and the idea of unity of science. (shrink)

We classify two of Bertrand Russell's theories of events within the point-free ontology. The first of such approaches was presented informally by Russell in ‘The World of Physics and the World of Sense’ (Lecture IV in Our Knowledge of the External World of 1914). Based on this theory, Russell sketched ways to construct instants as collections of events. This paper formalizes Russell's approach from 1914. We will also show that in such a reconstructed theory, we obtain all axioms of Russell's (...) second theory from 1936 and all axioms of Thomason's theory of events from 1989. Russell's work certainly influenced the works of Stanisław Leśniewski, his student Alfred Tarski, and Czesław Lejewski – prominent members of the Lvov-Warsaw School (LWS). We see our work in the tradition of the research of Leśniewski and Tarski. Building on the technical tools developed in this environment and in the spirit of the traditional research of the LWS, we engage here, in particular, with two classic works by Russell on fundamental ontology. (shrink)

This paper presents the link between Arthur N. Prior and logicians that belonged to the Lvov-Warsaw School. Although certain members of the Lvov-Warsaw School influenced Prior’s views, the amount and the form of the impact are still under discussion. Prior also cooperated with some of them in the development of his systems of logic. This paper focuses on four main areas in which Prior admitted adopting ideas from the Lvov-Warsaw School: systems (...) of propositional logic, the history of logic, modal and temporal logic and ontology. Prior’s published works as well as his correspondence, which is stored in Prior’s Nachlass, are used to describe the influence. (shrink)

The problem of precise characterisation of traditional forms of reasoning applied in mathematics was independently investigated and successfully resolved by Jaśkowski and Gentzen in 1934. However, there are traces of earlier interests in this field exhibited by the members of the Lvov-Warsaw School. We focus on the results obtained by Jaśkowski and Leśniewski. Jaśkowski provided the first formal system of natural deduction in 1926. Leśniewski also demonstrated in some of his papers how to construct proofs in accordance (...) with intuitively correct principles. (shrink)

In this article, Józef M. Bocheński is presented as a representative of the methodological tendencies of the Lvov–Warsaw School. Special attention is given to the reconstructive analysis of concepts, the categorial trait of this procedure, and examples of its application by Bocheński. First, some historical and substantial arguments are presented for including Bocheński in the LWS. Secondly, the procedure of the reconstruction of concepts applied in the LWS is characterized. Then the attention turns to the categorial trait (...) of the analysis as indicated by Bocheński. Finally, two examples of Bocheński’s categorial reconstruction of concepts are presented. The article ends with a recapitulation and general remarks. (shrink)

In this article, the author attempts to identify the sources of good and evil as undertaken by the Lvov-Warsaw School of Philosophy (LWSP) founded by Kazimierz Twardowski. Such attempts were undertaken by both Twardowski himself and his closest students and associates; Władysław Witwicki, Tadeusz Kotarbiński. Tadeusz Czeżowski, and Kazimierz Ajdukiewicz. The best-known approach is Kotarbiński’s independent ethics in which the author refers to Aristotle perceiving such potential in the characteristics of each individual as to distinguish elementary (...) qualities in the form of opposites including opposition to good and evil. According to this approach, man acts in an evil manner because he stops following the natural voice of his own heart and instead implements set proposals provided by external factors. In the opinion of the author, the proposals formulated within the LWSP can form the basis for a rational explanation of the atrocities committed during World War II which modern ethics, being focused on neutral metaethical issues, fails to do. (shrink)

Justification of theorems plays a vital role in any rational human activity. It is indispensable in science. The deductive method of justifying theorems is used in all sciences and it is the only method of justifying theorems in deductive disciplines. It is based on the notion of proof, thus it is a method of proving theorems. In the Warsaw School of Logic (WSL) – the famous branch of the Lvov-Warsaw School (LWS) – two types of (...) the method: axiomatic deduction method and natural deduction method were developed and practiced. In this paper, both of these methods are briefly discussed with an emphasis on their historical, groundbreaking significance for logic. The axiomatic method by means of rejection (proposed by Jan Łukasiewicz – a co-creator of the WSL), which is the method of the so-called rejection proof (rejection/refutation method) in logical systems and the proving method of generalized natural deduction, which is a hybrid deduction–refutation method of proving theorems, are also outlined in the paper. The author discusses their historical significance. This paper also contains a brief mention of the most significant results which the application of the discussed methods introduced into contemporary scientific research, not only logical one. (shrink)

Leading authors in their fields present an interdisciplinary panorama of vital themes of the philosophy of language and track their historical origins. This book gives new life to historical ideas and additional depth to current debates.

This collection celebrates the centenary of the Lvov-Warsaw school, established by Kazimierz Twardowski in Lvov in 1895.

The volume aims to show the variety of research currents of the Lvov-Warsaw School and the ways in which these currents are developed today. The content of the book is divided into three parts: “Logic and Semiotics”, “Metaphysics and Ontology”, and “Psychology and Sociology”.

Lvov-Warsaw School in Philosophy – as the very name suggests – was connected mainly with two academic centers: universities in Lvov and Warsaw. However, it had a broader impact. The members of this school were active also at other universities, in particular in Cracow, Vilnius and Poznań. The aim of the paper is to present and analyze the connections of Lvov-Warsaw School with the University in Poznań.

The kernel of this volume is an English translation of Jan Łukasiewicz’s classic work on the concept of cause (1906). It is the starting point for analytical considerations on causality of two generations of philosophers belonging to the tradition of the Lvov-Warsaw School.

This book grew out of an international symposium, organized in September 1986 by the Austrian Cultural Institute in Warsaw in cooperation with the Polish Philosophical Society. The topic was: The Vienna Circle and the Lvov-Warsaw School. Since the two phil osophical trends existed in roughly the same time and were close ly related, it was one of the purposes of the symposium to investigate both similarities and thp differences. Some thirty people took part in the symposium, (...) nearly twenty contributions were presented and extensively discussed. The sym posium owed much to the excellent organization and warm hospital ity shown by Dr Georg Jankovic, the Director of the Austrian In stitute. As the person in charge of the scientific programme of the symposium, I take pleasure to acknowledge this debt. It so happened that a month later another symposium of a similar character was held. It took place in the University of Manchester, on the occasion of the centenary of the births of Stanislaw Lesniewski, Tadeusz Kotarbiflski and Wladyslaw Tatarkie wicz. Some papers read at the Manchester symposium form a part of the present volume. It was not possible, for technical reasons (the time factor was one of them), to include in this book all the material from the two symposia. Certain contributions have appeared elsewhere (for instance, K. Szaniawski's 'Ajdukiewicz on Non-Deductive Inference' was published in Danish Yearbook of Philosophy, Vol. 23). On the other hand, certain papers have been written special ly for this volume. (shrink)

Kazimierz Twardowski was renowned as an outstanding philosopher, teacher, and organizer of academic life. No less famous was his style of work, depicted in many recollections of his students. In the paper, I present three aspects of good mental work: a) stoic inspiration for Kazimierz Twardowski’s style of work, b) the place of the techniques of mental work in the program of pragmatic logic according to the views of Kazimierz Ajdukiewicz and Tadeusz Kotarbiński, and c) selected contemporary approaches consistent with (...) the direction provided by the Lvov-Warsaw School. By exploring a new perspective in the study of good mental work by linking it to the ancient philosophy of life as well as to the most recent developments in the theory of good mental work, the paper reveals unexplored insights into the tradition of the Lvov-Warsaw School, demonstrating its significance, depth, and relevance to modern times. (shrink)

Between 11–14 February 2021 the first international Philosophical Workshop organized by The Lvov–Warsaw School Research Center and Kazimierz Twardowski Philosophical Society of Lviv took place in the on–line version due to the ongoing COVID–19 pandemic. The working languages of the event were Polish, Ukrainian and English. The coordinators’ goal was to refer to the tradition of seminar of Kazimierz Twardowski, who was not only a distinguished philosopher but also a great educator, to stimulate interest and support for (...) the young generation of researchers into the heritage of the Lvov–Warsaw School. It is claimed that due to Twardowski’s unprecedented didactical engagement he managed to upbring dozens of Professors like Kazimierz Ajdukiewicz, Stefan Baley, Leopold Blaustein, Tadeusz Czeżowski, Izydora Dąmbska, Tadeusz Kotarbiński, tanisław Leśniewski, Jan Łukasiewicz, Władysław Witwicki. (shrink)

The Warsaw School of Logic (WSL) was the famous branch of the Lviv-Warsaw School (LWS) – the most important movement in the history of Polish philosophy. Logic made the most important field in the activities of the WSL. The aim of this work is to highlight the role and significance of the WSL in the history of logic in the 20th century.

Main headings: Introduction: Philosophy and precision. - Part I. Being and essence. - Part II. Truth and nonsense. - Part III. Understanding and silence. - Conclusion: Science and creation.

The aim of the paper is to consider ontological views connected with mathematics and logic of main representatives of Lvov-Warsaw School of Philosophy. In particular views of the following scholars will be presented and discussed: Jan Łukasiewicz, Stanisław Leśniewski, Alfred Tarski, Tadeusz Kotarbiński and Kazimierz Ajdukiewicz. We shall consider also views of Andrzej Mostowski who belonged to the second generation of the school as well as of Leon Chwistek who was not directly the member of (...) this group but whose conceptions are of interest. (shrink)

The article explores the concept of scientific philosophy as understood by members of the Lvov-Warsaw School. The author argues that according to Twardowski and his students, philosophy should be done as an exact discipline which ought to be pursued in critical and collaborative spirit. Selected views on scientific philosophy are analyzed, including ideas of Ajdukiewicz, Zawirski, and Dąmbska. It is claimed that though the conception of scientific philosophy is beset with crucial and fundamental (...) ambiguities, it was far more important for the Lvov-Warsaw School than the idea of analytic philosophy. (shrink)

The book presents a collection of articles authored by several members of the Warsaw School of Political Theory, affiliated with the University of Warsaw. The team of scholars, first founded in the 1970s by professor Artur Bodnar, has been conducting research under the leadership of professor Miroslaw Karwat.

The Introduction outlines, in a concise way, the history of the Lvov-Warsaw School—a most unique Polish school of worldwide renown, which pioneered trends combining philosophy, logic, mathematics and language. The author accepts that the beginnings of the School fall on the year 1895, when its founder Kazimierz Twardowski, a disciple of Franz Brentano, came to Lvov on his mission to organize a scientific circle. Soon, among the characteristic features of the School was (...) its serious approach towards philosophical studies and teaching of philosophy, dealing with philosophy and propagation of it as an intellectual and moral mission, passion for clarity and precision, as well as exchange of thoughts, and cooperation with representatives of other disciplines. The genesis is followed by a chronological presentation of the development of the School in the successive years. The author mentions all the key representatives of the School, accompanying the names with short descriptions of their achievements. The development of the School after Poland’s regaining independence in 1918 meant part of the members moving from Lvov to Warsaw, thus providing the other segment to the name—Warsaw School of Logic. The author dwells longer on the activity of the School during the Interwar period—the time of its greatest prosperity, which ended along with the outbreak of World War 2. Attempts made after the War to recreate the spirit of the School are also outlined and the names of continuators are listed accordingly. The presentation ends with some concluding remarks on the contribution of the School to contemporary developments in the fields of philosophy, mathematical logic or computer science in Poland. (shrink)