Jan Łukasiewicz, a prominent Polish logician and philosopher, dealt with the scientific analysis of the concept of cause using logic. He wanted first and foremost to construct a definition, which reconciles the irreversibility of causal relationship to the exclusion of time sequence. In this article, I show that his attempts led to many contradictions, paradoxes and inconsistencies between Łukasiewicz’s definitions and commonly recognized examples of causality, even those given by the author himself. First, I present the semantic and formal aspects (...) of the definition proposed by him, and then I analyze examples, most of them proposed by the author. The main charges against his concept of causality are: the ambiguity of the concept of necessity; exclusion “for reasons of terminological” some causal phenomena from the range specified by the definition; paradoxes such as: the existence of the world is the cause of the existence of God; baseless demand, different subjects, and different features for cause and effect; disregard of the defnitive difference between post hoc and propter hoc; unjustified requirement of affirmative statements expressing a possession of attributes. The critique presented in this article is incomplete, but its function is to indicate both the value of logical analysis of philosophical concepts, and the dificulties of which such an analysis can entangle. Such an analysis can sometimes complete the process of defining certain concepts, but more often it provides an opportunity for further discussion and a better overall understanding. (shrink)

In the article I deal with some paradoxes and errors caused by improper usage of logical and philosophical terms appearing in the arguments for existence of god and other philosophical issues. I point at rst some paradoxes coming om improper usage of propositional calculus as an instrument for analysis of a natural language. this language is actually not using simple sentences but rather propositional functions, their logical connections, and some replacements for variables in them. We still have to deal with (...) so called paradox of material implication. the second paragraph provides formal and metatheoretical critics of Charles Sanders Peirce’s theory of deduction, induction and abduction. I argue that what Peirce and his followers call abduction is actually deduction or some reasoning unable to describe in terms of the logic used by them. Both syllogistic and inferential theory of abduction generate some paradoxes and contradictions. In the last paragraph also some paradoxes and contradictions resulting om the theory of causation by Jan Łukasiewicz are presented. the central issue of the article is erroneous usage of the implication: in logical paraphrases of a natural language, in description of the scienti c reasoning, and in description of causality. However, my objective is not to solve all problems mentioned above but rather to open a discussion over them. (shrink)

Jest to początek Zarysów Pyrrońskich Sekstusa Empiryka, ks. I (1-30) w nowym przekładzie. Całość tekstu ukaże się w Wydawnictwie UMK w połowie roku 2019. -/- This is the opening part of Sextus' Outlines of Pyrrhonism (I 1-30). The translation of the treatise will be published by Wydawnictwo UMK in the 2019.

Jest to tłumaczenie Zarysów Pyrrońskich Sekstusa Empiryka. W pliku znajduje się początek wstępu oraz I sposób powściągnięcia sądu. This is a complete Polish translation of Sextus Empiricus' Outlines of Pyrrhonism. In the file you may find the beginning of the Preface and the translation of the I mode of suspension of judgment.

This is the interview with Prof. Stefan Swieżawski, an eminent medievist and enthusiast of Thomas Aquinas' philosophy.

Jest to wybór z pracy Gadamera "Idea dobra..." Zawiera Przedmowę, Zakres problemu, Rozdział I (Sokratejska wiedza i niewiedza) oraz Posłowie tłumacza. This is the opening part of the Polish translation of Gadamers' The idea of the good... with the Translator's afterword.

The text was originally a conference speech. In principle, it was prepared for teachers of philosophy and people interested in philosophy, therefore it has the character of an essay and only to a small extent refers to the literature of the subject. However, I am deeply convinced of the validity of the thesis that I propose in it, even if they may seem only to a small extent supported by references to the state of research. -/- Synthetical studies take a (...) special place in the research on the history of ancient philosophy. They demonstrate the existing perspective by performing a selection and arrangement of the material, presenting the periodisation, accentuating and determining what is “philosophically significant.” This article points out that despite the great progress made in detailed research that has taken place over the last few decades, the general framework of development of philosophy, derived from Hegel’s thought, has remained unchanged for two centuries. Hegel’s perspective has instilled a certain pattern that encompasses a whole series of debatable solutions. These include (1) development of a certain understanding of what “philosophy” is and thus separating it from a wide spectrum of literature, rhetoric, medicine, and religion; (2) introduction of a dubious periodisation (e.g. the distinction between the Presocratic period and Socrates’ breakthrough in the form of a departure from the philosophy of nature and return to ethical considerations; (3) adoption of philosophy of Plato and Aristotle as the apex of thought. The author highlights the need to change the approach to the history of ancient philosophy and modify the existing paradigm. He calls for paying greater attention to the intertextual element and to the fact that the assessment of originality and relevance of preserved works is falsified due to the disappearance of comparative material. The proposal to establish a new reconstructive paradigm is based on the belief that during further research on ancient philosophy it would be advisable (1) to expand the research perspective and enrich it with the fields of education, medicine, the great sphere of literature, the spheres of fine arts and music, (2) to focus more on the issue of transmission and reception of texts thanks to which it is possible to deepen and extend the reconstructed context of philosophical discussions, (3) to come to the realisation that the abstract character of description, connected with all the syntheses of the philosophical thought in antiquity lead to its oversimplification and impoverishment by presenting it out of the context and depriving of what is individual and specific for a particular thinker. (shrink)

To opracowanie historii filozofii starożytnej i średniowiecznej zredagowane na podstawie manuskryptów przez A. Świtkiewicz-Blandzi, M. Olszewskiego, A. Zwolińską i Z. Nerczuka. Moja część pracy polegała na opracowaniu I części, obejmującej całą Starożytność. W załączniku myśl Heraklita w manuskrypcie Pana Profesora Swieżawskiego oraz w moim opracowaniu.

Though it is evident that seriously and irreversibly defective infants are born in Poland, as well as in other socialist countries we do not know really what is the existing medical practice concerning their treatment or non-treatment. No representative empirical investigations were conducted with respect to it. We believe, however, that for the majority of doctors this is not a genuine moral problem at all. They feel simply morally, legally, and professionally obliged to treat those unhappy creatures without any regard (...) to economic and moral cost of treatment. It is highly plausible that this attitude is common to all socialist countries. All the factors mentioned in this paper (religion, ideology, medical education, paternalism, remembrance of Nazi doctors’ criminal practice, the legal situation, and the health care system) have a direct influence on the moral beliefs and attitudes of doctors in socialist countries. And even in those countries in which there are different religious traditions (like the Soviet Union, Yugoslavia, or the German Democratic Republic) there is a deeply-entrenched belief that preserving any human life is the principal and absolute duty of a doctor, one which must be fulfilled at any cost. We should also keep in mind that in this part of the world hardly any distinction at all is made between euthanasia and ordinary murder. (shrink)

The paper discusses the debate on the human nature in the sophistic thought. Focusing on the "nature-culture" controversy it presents the evolution of the views of the sophists: from Protagoras' optimistic contention of the progress of mankind and his appraisal of culture to its criticism and the radical turn to nature in Antiphon, Hippias, Trasymachos, and Callicles. The paper aims at presenting the analysis of the ongoing discussion, with the stress laid on reconstruction of the arguments and concepts as well (...) as the attitudes that are associated with various positions of this debate. -/- . (shrink)

The paper is devoted to the sophistic method of "two-fold arguments" (antilogic). The traditional understanding of antilogic understood as an expression of agonistic and eristic tendencies of the sophists has been in recent decades, under the influence of G.B. Kerferd, replaced by the understanding of antilogic as an independent argumentative technique, having its own sources, essence, and goals. Following the interpretation of G.B. Kerferd, according to which the foundation of the antilogic is the opposition of two logoi resulting from contradictions (...) or opposites, necessarily associated with the contradictory character of the sensual world, in the paper it is argued that the philosophical basis of antilogic should be sought in the presentation of the views attributed to Protagoras and "adherents of flux" in Plato's dialogue Theaetetus. (shrink)

Jest to fragment traktatu "O Bogu" z "Summy Teologii" św. Tomasza z Akwinu - zawiera on Wstęp, Wprowadzenie i przekład ksiąg VII - X. ks. VII - "O nieskończoności Boga" ks. VIII - "O byciu Boga w rzeczach" ks. IX - "O niezmienności Boga" ks. X - "O wieczności Boga".

Each of us is a measure. The project of advocates of change in Plato’s Theaetetus as compared with sophistic thought -/- Summary -/- One of the most intriguing motives in Plato’s Theaetetus is its historical-based division of philosophy, which revolves around the concepts of rest (represented by Parmenides and his disciples) and change (represented by Protagoras, Homer, Empedocles, and Epicharmus). This unique approach gives an opportunity to reconstruct the views of marginalized trend of early Greek philosophy - so called „the (...) sophistic movement”. Paradoxically, previous research shows little interest in sophistic thought as a source of the standpoint of advocates of change („the secret doctrine”). The roots of „the secret doctrine” were investigated in the works of Heraclitus, Aristippus, and Antisthenes or those related to “neoheracliteanism”. However, researchers did not make any significant attempt to confront this concept with the contemporary research on the sophistic movement. The conviction that sophistry was primarily humanistically oriented was one of the main reasons why researches were opposed to the fact that „the secret doctrine” could represent a true expression of Protagoras’ views. This is why J. Burnet and F. M. Cornford in their seminal works assumed that “the secret doctrine” should be attributed to Plato, who simply combined a series of loose statements into one single project. In this work, we argue that the thesis which questions the parallels between the sophists’ interests and the philosophers of nature requires a significant revision. There is ample evidence to suggest that the philosophy of nature was a part of sophists’ research. This is supported by two main arguments. First, the tutors of sophists were philosophers of nature. Second, there are numerous sources that explicitly show sophists’ interest in the physical issues. These sources include anecdotal evidence about the fact that sophists wrote works On nature. There is also information confirming that they deliberated on detailed physical issues. The analogies between the concepts attributed to the advocates of change and our knowledge about sophists from other sources is very wide and contains most elements, which are included in the project of “changeable reality” presented in Theaetetus. The deliberations on the mechanism of perception, which are close to those of flux theory of perception in Theaetetus, are present in the sources referring to Gorgias of Leontinoi, the famous sophist and rhetorician. Also, the second element of “the secret doctrine” that is the metaphysics of flux matches up with what we know about the sophists’ views from other sources. On this basis, one can deduce that – contrary to the tradition which marginalized the role of sophistic considerations on the issue of being and non-being – it was one of the major subjects of sophistic research. Its main point was the criticism of the Eleatic conception of a single and unchangeable being, which also plays a key role in the doctrine of flux in Theaetetus. The epistemological theses which are presented in Theaetetus are borne out in sophistic sources. They include the definition of knowledge as perception, the „Man-measure” formula and a number of principles, which result from these foundational theses. Sophists’ empirical preferences resonate with the theses of the advocates of change in Theaetetus. Special attention that is given to the issues of differences among people, and even to cognitive differences in one person depending on the changeable states to which a person is subject, goes well together with what we know about reciprocal influence between the sophistry and medicine. The consequences of the epistemological conception present in Theaetetus have their equivalents in sophists’ works and other testimonies. An example of these consequences may be the abolition of truth and falsehood or the abolition of contradiction, which finds its expression in the thesis ouk estin antilegein. The analogies also concern reflections on the language itself. The project of the “new language” uses categories, which were developed by sophists. These include the antithesis of nomos and physis. The general intentions of this project reflect Protagoras’ ideas, at least to the extent to which they are known from the sources reporting his thoughts on language. Plato’s Theaetetus can thus be considered a veritable treasury of sophistic motifs. Even though the problem remains unsolved and one is still not able to unambiguously decide about the author of “the secret doctrine”, one can come to a certain conclusion – even if Plato synthesized various doctrines, he must have relied in his project mostly on the elements that he borrowed from sophists. Moreover, the value of reconstructing the project of the advocates of change in Theaetetus does not consist of mere enumeration of sophistic motifs. The dialogue is key to understanding the sophistic movement, whose separate doctrines – for the lack of sources and as a result of centuries-old disregard – are usually treated as rhetorical formulae that are interpreted in many ways and have no philosophical foundations. If it is really the case that the theses attributed to Protagoras in Theaetetus were actually a part or a derivative of Protagoras’ thought, or – speaking more conservatively – if they constitute a synthesis of sophistic thought done by Plato, they could represent philosophical foundations for the most important sophistic theses: the “Man-measure” formula, the ouk estin antilegein principle, the concept of language as a tool, the idea of the relativity of good and the whole practical sphere of sophists’ activity. Contrary to the views of many researchers, we are certain that the representatives of the sophistic movement did not limit themselves only to the application of practical rules, which determined the extent of their educational or rhetorical-political activity. They were capable of creating – indeed, they did create comprehensive projects that embraced the whole thematic scope subject to philosophical reflection. (shrink)

The paper discusses the problem of the source of the analogies between philosophical outlook of the Sophists and the skeptical tradition of Pyrrho and his successors. Its main objective is to point out that the similarities in standpoints, arguments and methods between these philosophical phenomena result from the transmission of Plato’s Theaetetus. It is argued that main ideas (phenomenalism, subjectivism, relativity and indeterminacy of things, rejection of being and acceptance of becoming and constant flux, antilogical position consisting in opposing two (...) contradictory statements etc.) which in Theaetetus constituted so called “Secret Doctrine” (attributed by Plato to Protagoras and disciples of Heraclitus), after being criticized by Aristotle in his discussion about the principle of contradiction in Metaphysics (books IV and XI), were acknowledged by Pyrrho and, revived by Aenesidemus, can be found incorporated into the skeptical tradition in the works of Sextus Empiricus. -/- . (shrink)

These are the excerpts from the book "Sztuka a prawda. Problem sztuki w dyskusji między Gorgiaszem a Platonem" concerning Gorgias' theory of apate (deception).

This is the introduction and the translation with a vast commentary in the footnotes of Gorgias' "Palamedes".

The paper is concerned with the role of the logos in the sophistic thought. The author argues that the importance of logos is a result of the conviction that according to the Sophists human reality is somehow „created” through words in the process of constant communication and interpretation. This idea inspires the Sophists to research on the particular conditions of the process of persuasion and to analyze the factors which determine the persuasive power of speech. This interest in the power (...) of "logos" leads the Sophists such as Protagoras, Gorgias, Antiphon to develop the techniques which aim at increasing the persuasive power of speech by addressing both rational and emotional part of the soul. (shrink)

This paper aims to present some basic information on life and work of Sextus Empiricus.

Studium poświęcone jest specyfice warsztatu tłumacza antycznych tekstów filozoficznych. Wszelką pracę translatorską, o ile ma ona na celu rekonstrukcję kontekstu językowego i historycznego, muszą poprzedzać zrozumienie i interpretacja tekstu. W celu rekonstrukcji kontekstu niezbędne jest odniesienie tekstu do prowadzonych ówcześnie dyskusji filozoficznych, odtworzenie siatki pojęciowej oraz wskazanie zapożyczeń oraz odesłań do innych tekstów. Realizacja tych zadań napotyka w przypadku prac z zakresu filozofii starożytnej na wiele przeszkód wynikających z wielowiekowej ewolucji języka greckiego, mglistości terminu ‘filozofia’, zaginięcia większości dzieł filozoficznych, zróżnicowania (...) terminologii filozoficznej poszczególnych filozofów czy nurtów, a także przenikania się wzajemnego tekstów. The paper is concerned with the characteristic of the translation of ancient philosophical texts. The work of the translation of a philosophical writing, as long as its goal is to reconstruct the philosophical context, must be preceded by understanding and interpretation of that text. In order to achieve this goal it is necessary to refer the writing to the ongoing philosophical discussions of that time, as well as to restore the conceptual grid and indicate the borrowings and references to other works. In the case of writings in the field of ancient philosophy these tasks encounter a lot of obstacles resulting from the evolution of Greek, from ambiguity of the term 'philosophy', from the loss of the most of the philosophical works, from the diversity of philosophical terminology, as well as from the intertextuality of the ancient philosophical literature. -/- . (shrink)

This is the translation of the Quaestio I "De sacra doctrina, qualis sit, et ad quae se extendat"" of Thomas Aquinas' "Summa Theologiae".

The article presents ethical work of an outstanding representative of the philosophical Lvov-Warsaw School – Izydora Dąmbska. The conviction that philosophy is a science and is axiologically grounded was inherited from her teacher Kazimierz Twardowski. According to this point of view, being a philosopher means realization of both intellectual and moral values. The text gives an insight into the ways Dąmbska understands the term ethics and her notion of the most fundamental terms of axiological ethics: assessment, values, norms. The four (...) distinguished by her issues of scientific ethics: the issue of ethical criteria, sources of morality, moral foundation and range of ethics are also examined. Dąmbska’s achievements in the history of ethics, her reflections on ethics’ independence from religion and on teaching ethics at school are also presented. (shrink)

This is the introduction and the translation of Gorgias' "Helen". The speech is considered to be one of the most interesting pieces of early Greek rhetoric not only because of its rhetorical, but also because of its philosophical value. There is no doubt that it sets out the outlines of the sophistic conception of logos and (along with another Gorgias' speech Palamedes) represents the starting point for the Plato's critique of Gorgias' rhetoric in the dialogue "Gorgias'.

This is the introduction to the Question 10 (The Eternity of God) of St. Thomas Aquinas' "Summa Theologiae".

This is the translation of Protagoras' life from Diogenes Laertius' "Lives of eminent Philosophers" (IX, 8).

This is the introduction to the Question 9 (The Immutability of God) of St. Thomas Aquinas' "Summa Theologiae".

This is the introduction to the Question 8 (The Existence of God in Things) of St. Thomas Aquinas' "Summa Theologiae".

This is the introduction to the Question 7 (The infinity of God) of St. Thomas Aquinas "Summa Theologiae".

This is the translation and interpretation of the Gorgias' speech from Plato's dialogue Gorgias (456A1-457C3). In the commentary it is argued that the Gorgias' speech in the dialogue is based on the philosophical and rhetorical motives which can be found both in Gorgias' epideictic speeches ("Helen" and "Palamedes") and doxographical accounts.

The paper examines the interest of the Sophists in the problems of the Pre-socratic philosophy of nature.

The paper aims at reconstructing the fundamentals of the sophistic anthropology. Contrary to the recognized view of the humanistic shift which took place in the sophistic thought, there is evidence that the sophists were continuously concerned with the problems of philosophy of nature. The difference between the sophists and their Presocratic predecessors was that their criticism of the philosophical tradition and the transformative answers given to the old questions were the basis and the starting point of the " ethical " (...) and " rhetorical " part of their intellectual activity. This natu-ralistic perspective is reflected in their research in the field of medicine and biology, in the discussion about " the human nature " , and in their interest in the individual physiological and mental conditions, which determine the state of the human body and the behaviour of a man. The sophists pioneered in linguistic, rhetorical, and philological studies. To enhance the power of persuasion, they investigated how various mental conditions influenced cognitive processes and physiological reactions. Thus they started a thorough examination of the human psyche, initiating the field of psychology. (shrink)

Techne and Truth. The problem of techne in the dispute between Gorgias and Plato -/- The source of the problem matter of the book is the Plato’s dialogue „Gorgias”. One of the main subjects of the discussion carried out in this multi-aspect work is the issue of the art of rhetoric. In the dialogue the contemporary form of the art of rhetoric, represented by Gorgias, Polos and Callicles, is confronted with Plato’s proposal of rhetoric and concept of art (techne). The (...) ingenuous and dramatic structure of the dialogue composed of three acts, in each of which Socrates’ consecutive interlocutors emerge, is difficult to interpret. It seems, however, that even though the first conversation between Socrates and Gorgias constitutes a small part of the dialogue, it forms the foundations for the discussion. This part, dealing with such important issues as the subject of art, knowledge, power and relation between art and good, is the starting point for the conversations which follow. What do the differences between the Gorgias’ and Plato’s concepts of art consist in? Any attempt to answer the question requires presentation of the background for the discussion taking place in Plato’s work as well as the reconstruction of Gorgias’ vision of the art of rhetoric and art in general, defining the relation between art and knowledge. The latter may be undertaken on the basis of two paraphrases of the treatise “On Non-existence”, two epideictic speeches entitled “Helen” and “Palamedes” and some smaller fragments which have been preserved from Gorgias’ creative output. The treatise “On Non–existence”, very paradoxical in its philosophical meaning, testifies to new, sophistic thinking represented by Gorgias of Leontinoi. The treatise is the polemic and attack on Eleatism based on certain principles and methods elaborated by the Eleatics themselves. It also shows that Gorgias – using traditional Eleatic schemes – is opposed to this tradition. Even though the treatise does not discuss the problem of art directly, it anticipates the considerations from epideictic speeches. “Helen” and “Palamedes” constitute further stages in the development of Gorgias’ thought and concept of art combining typically epideictic elements with some philosophical convictions. Gorgias refers to the Eleatic theme considering the issues of truth, knowledge and belief, yet defining them in the empirical spirit. Solutions in the cognitive sphere determine the horizon of Gorgias’ rhetoric. The word is separated from the existence. Human cognition is limited and therefore the word and visual images affect the belief. This promotes the great importance of rhetoric, painting and sculpture, i.e. the areas which influence in a specific way – creating the “delusion” (ἀπάτη). Through idealization art provides pleasure, which is its objective. Therefore the task of art is to create delusion. The rhetor of Leontinoi discusses the issue of “how?” to use the word ‘rhetoric’. Gorgias is aware that rhetoric may be used to talk about what is unknown and that technical correctness of a rhetoric statement is not identical with the truthfulness of the proclaimed message. Mentioning it, Gorgias shows his respect to the truth as a value which should be respected in speech on the one hand, and on the other emphasizes that the truth in itself has no persuasive power. For this reason it is not enough to proclaim the truth, but, to convince the listeners, the orator should possess the skill of speaking. What is then the relation between truth and art emerging from epideictic speeches? Gorgias undoubtedly emphasizes the formal aspect of speech, as rhetoric is art, thus an ability based on certain principles. According to Gorgias, the truth is the value which should be respected in speeches. Rhetoric is able to create a fictive world, as a great range of reality remains outside direct human experience. Rhetoric does not oppose the truth but discussing not only what is directly given concerns the area outside the sphere of direct experience. This concept of rhetoric is the basis of the discussion about art carried out in the dialogue “Gorgias”. Even though the first of the discussions in the dialogue – the conversation between Socrates and Gorgias – is directly concerned with rhetoric itself, numerous remarks testify to its much wider character. This is best exemplified by the way of carrying out the conversation by Socrates, who, asking questions about rhetoric practised by Gorgias, throughout the whole conversation compares it with other skills. Additionally, the manner and the structure of the conversation prove that Plato considers the issue of rhetoric from a wider perspective determined by the issue of art. The specific feature of the conversation is ordering it around main issues – such notions as πρᾶγμα, ἐπιστήμη, δύναμις, each of which has its own meaning in Plato. In the first part of Gorgias Plato presents the principles previously occurring in other dialogues in a certain order, thus constructing the structure of the conversation with Gorgias. The notions are not novum in Plato but the fact that he clearly wants to systematise them and present a certain concept of art is a new and significant aspect. This tendency is of paramount importance for the discussion because Gorgias’ answers are evaluated by Plato from the perspective of this clearly set concept consisting of not only established notions but also certain principles. The discussion between Socrates and Gorgias introduces a theme which is crucial for the dialogue: the relation between art and good, i.e. the technical and ethical spheres. The issue is introduced by Gorgias, who mentions that rhetoric may be used for evil purposes. On this basis Socrates proves that if rhetoricians can use rhetoric for evil purposes, they have no knowledge concerning the subject of their art – justice, because one who knows what is just, always acts justly. Thus the relation between the technical and ethical spheres transpires to be the main point of contention. The question is whether a technician following the principles of the art he practices may act against good. This paradoxical statement based on the well-known Socrates’ principle "nemo sua sponte peccat" acquires philosophical foundations in the dialogue. In its remaining two parts Plato presents a justification, placing the principle within the framework of a certain concept of art, as a result of which not only rhetoric but also many other skills are criticised. The notions on which the conversation with Gorgias focuses are more precisely defined in the subsequent parts of the dialogue. Additionally, Plato presents twice the conditions which art should fulfill. They oblige the “technicians” to know the nature and purpose of the art and to know the causes of undertaken activities and to be able to justify them. These conditions determine the relation between the two spheres – technical and ethical. According to Plato, art may not act against good because it should be the objective of its activities. Certain concepts of good and knowledge outlined in the dialogue are the guarantees of “technicality”. Good, which should be respected by every art, is understood objectively and is contrasted with subjective pleasure. Knowledge, which should be the basis of art, opposes experience, which uses observation and recollection. Additionally, the definition of knowledge, significance of order in the world assuming the form of “geometrical equality”, significance of mathematics becoming the ideal of exactness indicate that Plato’s concept of knowledge is formed in Gorgias. These conclusions render it impossible that the results of any activity deserving the name of art should oppose good. And this is Plato’s main reproach of Gorgias’ concept, who wrote about false speeches possessing the power of conviction because they were written according to the principles proof of art or who defined tragedy as “a deceit, where he who cheats is more just than he who does not and the cheated is wiser than he who was not cheated”. Such determination of the relation between the technical and ethical sphere resulted from Gorgias’ concept of the world and fundamental philosophical principles. The whole concept of art described by Plato in the dialogue opposes the view presented by Gorgias. According to Plato, every technical activity has a defined object (ἔργον), is based on knowledge (ἐπιστήμη) and is always aimed at the good of human soul or body. The danger revealed and presented in the dialogue by Plato exists in the very concept of art presented by Gorgias, i.e. in its empirical foundations and the resulting understanding of the relation between art and good. Gorgias’ concept of art based on empirical cognition, which concerns the world of phenomena and rejects the possibility of perfect knowledge, leads, according to Plato, to a dangerous falsification of the relation between art and good. Plato proves that this weakness of Gorgias’ concept is revealed when confronted with these representatives of “the magnificent art” who are not protected against radicalism by the adherence to the moral tradition. The comparison of two, completely contrasting concepts of art based on different philosophical understanding of knowledge and good is decisive for the criticism of rhetoric in Gorgias. The concept presented by Plato criticises contemporary rhetoric and sophistry but determines the direction of research of the real art of rhetoric. (shrink)

This is the Polish translation with introduction and commentary in the footnotes of Sextus Empiricus' work "Against the Professors" (AM I-VI).

Polish translation, introduction and commentary to Sextus Empiricus, Against the physicists. Against the ethicists.

The method of dissoi logoi in Pre-Platonic testimonies The paper analyzes some references to the method of "dissoi logoi" (which is called by Plato "antilogic") in Pre-Platonic testimonies such as Aristophanes’ The Clouds, fragments of Euripides' Antiope and The Phoenicians, and the anonymous work called "Dialexeis" (Dissoi logoi). The analysis of these Pre-platonic sources results in the following conclusions: (1) The method of dissoi logoi was the universal strategy adopted by the sophists to argue on both sides - for and (...) against any thesis. (2) The Sophists are pointed out by all the testimonies as those who invented this method. (3) the same as it is in Plato's dialogues the criticism of the method in these Pre-platonic sources is based on the conviction that the method can be used immorally. (shrink)

The paper is concerned with the medical and the biological sources of Protagoras' views.

Natural basis of the Sophistic conception of man — an outline. Following the tradition of the philosophy of nature, influenced by hippocratic medicine, Sophists claim that human-being is a biological creature, a part of the world of nature, subject to its rules and rights. Convinced that human-being is a composition of physical and spiritual elements and interested in the relation between the two, the Sophists examine the impact of psychological and physical stimuli on human behaviour. They take under scrutiny various (...) human states (pathe) such as sleep, wakefulness, sickness, madness, love, hatred. They emphasize the uniqueness and "private" character of individual perceptions and states which are dependent on the particular situation of a given subject. For these reasons, as they maintain, the nature of human cognition must be "private", fragmentary and limited. (shrink)

The paper is concerned with the epistemological foundation of Plato's criticism of Gorgias' rhetoric in the dialogue "Gorgias".

This is the Preface to the doctoral thesis of Benedykt Woyczyński - one of the disciples of Wincenty Lutosławski.

Protagoras u Sekstusa Empiryka (PH I 216) a platoński Teajtet Dzieła Sekstusa Empiryka stanowią ważne źródło doksograficzne, zawierając m. in. fragmenty i przekazy poświęcone sofistyce. Są wśród nich omówienia poglądów Protagorasa. W świetle problemów, jakie stwarza rekonstrukcja myśli tego sofisty, warto poddać badaniu źródła i perspektywę Sekstusa, zwracając szczególną uwagę na krótkie przedstawienie tez Protagorasa zawarte w Zarysach Pyrrońskich (PH I 216). Porównując omówienie Sekstusa i przedstawienie Platona w Teajtecie, dostrzec możemy podobieństwo prezentowanych poglądów. W przekazie Seksusa podobnie jak w (...) Teajtecie główny akcent położony jest na tezę homo-mensura, z którą wiąże się dwa inne podstawowe dla platońskiego dialogu wątki: zmienności rzeczy oraz "prywatności" spostrzeżeń. Mimo charakterystycznej dla sceptycyzmu modyfikacji strony pojęciowej, nadinterpretacji oraz wyrwania tez z dialogowego kontekstu przedstawienia obu wątków wykazują daleko idące paralele z Teajtetem. Bez względu na to, czy omówienie to jest dziełem samego Sekstusa, czy zaczerpnięte zostało z jakiegoś wcześniejszego źródła mającego charakter sceptycznej "ściągawki", możemy na jego podstawie wnioskować, że dialog Teajtet uważany był w późnej starożytności za wiarygodne źródło informacji na temat poglądów Protagorasa. Należy jednak podkreślić, że przekaz Sekstusa stanowi jedynie interpretację treści zawartych w platońskim Teajtecie i – wbrew praktyce wielu uczonych - nie może być brany pod uwagę jako niezależne źródło wiedzy o myśli Protagorasa. (shrink)

The article discusses the presence of Plato' philosophy in Poland including the presentation of the reception of Plato's texts and the knowledge of Plato's philosophy in Poland. It outlines the influence exerted by Plato's thought on various aspects of Polish culture and sets out the research on Plato in the XIX and XX centuries. The paper is supplemented with a selection of contributions concerning Plato (papers, monographs, translations) published in Poland after the year 1945.

This is the introduction and Polish translation of Sextus Empiricus "Against the Rhetoricians" (part) (Adversus Mathematicos book II).

This is the introduction and the translation into Polish of the fragment from Sextus Empiricus' Against the Ethicists (AM XI, 42-167).

This is the afterword to the Polish translation of the book by P. Hadot, "Plotin ou la simplicite du regard".

The paper proposes a new formal approach to vagueness and vague sets taking inspirations from Pawlak’s rough set theory. Following a brief introduction to the problem of vagueness, an approach to conceptualization and representation of vague knowledge is presented from a number of different perspectives: those of logic, set theory, algebra, and computer science. The central notion of the vague set, in relation to the rough set, is defined as a family of sets approximated by the so called lower and (...) upper limits. The family is simultaneously considered as a family of all denotations of sharp terms representing a suitable vague term, from the agent’s point of view. Some algebraic operations on vague sets and their properties are defined. Some important conditions concerning the membership relation for vague sets, in connection to Blizard’s multisets and Zadeh’s fuzzy sets, are established as well. A classical outlook on a logic of vague sentences (vague logic) based on vague sets is also discussed. (shrink)