The paper analyses not well known beginning of Cracow philosophy of nature originating from the 19th century. A selected number of issues formed by two founders of Cracow philosophical centre – W. Heinrich and M. Straszewski are presented. Finally, the author tries to refl ect on modern nature philosophy in the context of its relations with tradition lasting over the centuries.

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In this paper we discuss Gabbay's idea of basing nonmonotonic deduction on semantic consequence in intuitionistic logic extended by a consistency operator and Turner's suggestion of replacing the intuitionistic base system by Kleene's three-valued logic. It is shown that a certain counterintuitive feature of these approaches can be avoided by using Nelson's constructive logic N instead of intuitionistic logic or Kleene's system. Moreover, in N a more general notion of consistency can be defined and nonmonotonic deduction can thus be based (...) on a logical system satisfying the Deduction Theorem. (shrink)

The academic community believes that the ulterior end of science is accumulation of knowledge. Other ethical constraints that pertain to the scientist are not different from those which oblige every other man in society to act decently, except for specifically professional norms which bind academics, but these, in point of fact, have their counterparts in any other profession, too. Thus the specific moral commitment of the academic profession worthy of a careful study and discussion is the claim that knowledge should (...) be accumulated as an ulterior end. Moral underpinnings of this position have to be laid bare together with social and moral consequences of the growth of knowledge. (shrink)

Deficits in recognition of facial expressions of emotions are considered to be an important factor explaining impairments in social functioning and affective reactions of schizophrenic patients. Many studies confirmed such deficits while controversies remained concerning the emotion valence and modality. The aim of the study was to explore the process of recognizing facial expressions of emotion in the group of schizophrenic patients by analyzing the role of emotion valence, modality and gender of the model. Results of the group of 35 (...) patients and 35 matched controls indicate that while schizophrenic patients show general impairment in recognizing facial expressions of both positive and the majority of negative emotions, there are differences in deficits for particular emotions. Expressions also appeared to be more ambiguous for the patients while variables connected with gender were found less significant. (shrink)

This collection of essays is about some of the most fundamental issues connected with metaphysics, theory of values and philosophy of man. What is particularly intriguing about this collection is its unique and fruitful combination of different methodologies and traditions in one rich and persuasive picture of the most basic philosophical problems.

ZusammenfassungMan zeigt zuerst, dass man eine finitistische und operationelle Interpretation der Hierarchien der Ordinal‐ und Kardinalzahlen der hlengentheorie geben kann, ohne einen wesentlichen Punkt der Theorie fallen lassen zu mussen. Dieser Standpunkt hat grosse Vorteile gegenuber einer streng formalistischen Interpretation der Mengenlehre. Als Folge zeigt man einen Weg, der es erlaubt, das Problem der unerreichbaren Zahlen global zu behandeln.