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. This school belongs to analytic philosophy and successfully worked in all branches of philosophy. The Warsaw school of logic became perhaps the most important part of Twardowski's heritage. Lesniewski, Lukasiewicz and Tarski, leading Polish logicians, achieved results which essentially influenced the development of contemporary logic. A close connection of logic and philosophy was a typical feature of the Lvov-Warsaw school. The papers included in the collection 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, which was one of the sources of the Lvov-Warsaw school.

"This book highlights the legacy of the Lvov-Warsaw School in broadly understood contemporary philosophy of language. Fundamental methodological issues, important topics in syntax, semantics and pragmatics (such as modern Categorial Grammar, theories of truth, game-theoretical semantics, and argumentation theory) are tracked down to their origins in the Lvov-Warsaw School, and - the other way round - modern renderings of the ideas expressed by Kazimierz Ajdukiewicz, Tadeusz Kotarbiński, Stanisław Leśniewski, Jan Łukasiewicz, Alfred Tarski, Kazimierz Twardowski, and other members of the School are presented. Among contributors there are philosophers, logicians, formal linguists and other specialists from France, Italy, Poland, and Spain"--

“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 (from: “Why Polish Philosophy does Not Exist”)

Polish Logic 1920-1939

This collection of fourteen original essays addresses the seminal contribution of Franz Brentano and his heirs, to philosophy of language. Despite the great interest provoked by the Brentanian tradition and its multiple connections with early analytic philosophy, precious little is known about the Brentanian contribution to philosophy of language. The aim of this new collection is to fill this gap by providing the reader with a more thorough understanding of the legacy of Brentano and his school, in their pursuit of a unique research programme according to which the analysis of meaning is inseparable from philosophical inquiries into what goes on in the mind and what there is in the world. In three parts, the volume first reconstructs Brentano’s pathbreaking thoughts on meaning and grammatical illusions, exploring their strong connections with the Austro-German tradition and analytic philosophy. It then addresses the multifaceted debates on the objectivity of meaning in the Brentano School and its aftermath (Meinong, Husserl, Ingarden, Twardowski and the Lvov-Warsaw School). Finally, part three explores Brentano’s wider legacy, namely: Husserl’s theory of modification and typicality, Bühler’s theory of linguistic and non-linguistic expressions, and Wittgenstein’s thoughts on guidance and rule-following. The result is a unique collection of essays which shows the significance, originality and timely character of the Brentanian philosophy of language.

This is a collection of new investigations and discoveries on the history of a great tradition, the Lvov-Warsaw School of logic 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.

This book is a collection of articles authored by renowed Polish ontologists living and working in the early part of the 21st century. Harking back to the well-known Polish Lvov-Warsaw School, founded by Kazimierz Twardowski, we try to make our ontological considerations as systematically rigorous and clear as possible – i.e. to the greatest extent feasible, but also no more than the subject under consideration itself allows for. Hence, the papers presented here do not seek to steer clear of methods of inquiry typical of either the formal or the natural sciences: on the contrary, they use such methods wherever possible. At the same time, despite their adherence to rigorous methods, the Polish ontologists included here do not avoid traditional ontological issues, being inspired as they most certainly are by the great masters of Western philosophy – from Plato and Aristotle, through St. Thomas and Leibniz, to Husserl, to name arguably just the most important.

This book examines the tension between formal and informal methods in philosophy. The rise of analytic philosophy was accompanied by the development of formal logic and many successful applications of formal methods. But analytical philosophy does not rely on formal methods alone. Elements of broadly understood informal logic and logical semiotics, procedures used in natural sciences and humanities, and various kinds of intuition also belong to the philosopher’s toolkit. Papers gathered in the book concern the opposition formality–informality as well as other pairs, such as methodology versus metaphilosophy, interdisciplinarity versus intradisciplinarity, and methodological uniformity versus diversity of sciences. Problems of the nature of logic and the explanatory role of mathematical theories are also discussed.

Kazimierz Twardowski (20/10/1866, Vienna - 11/02/1938, Lvov) is most commonly known as the teacher of great philosophers and the founder of the Lvov-Warsaw School. As a philosopher however, he is primarily remembered for his famous comparison of the contents and objects of various kinds of representations, a comparison that remains enshrined in European thought. In fact, he attained important results in many other branches of philosophy as well. For instance, in (descriptive) ontology, he laid the foundations for the modern theory of formal structure of objects, and he introduced the theoretically fruitful pair of terms, action-product. In epistemology, he developed a profound analysis of the notion and criteria of truth; and he provided a forceful account of the errors underlying relativist theories of truth. In methodology, he drew an explicit distinction between the processes of discovering, systematising, and grounding in science, and he offered accurate descriptions of the nature of psychology and other humanities. In (philosophical) logic, he offered decisive arguments on behalf of the idiogenetic conception of judgement, and he improved the traditional typology of adjectives. These achievements are of significance that is not only historical. Kazimierz Twardowski's work, formulated in plain, precise language, are instructive and inspiring for contemporary students of philosophy.