A critical analysis of Perzanowski’s attempt to develop an ontological argument based on the degree of reality shows that the comprehension axiom needs to be reinforced and that the family of all perfections is logically closed. This means that the P6 axiom is unnecessary. Moreover, the replacement of the reduction axiom by a strengthened instantiation axiom increases the number of degrees of reality and the class of consistent sets of qualities.
This paper is a monograph about the categories of “Scheingedanke” and “Dichtung” in the philosophy of Gottlob Frege. The author argues for the objective character of such thoughts. Finally, he points out two possibilities of a scientific analysis of sentences which express thoughts that belong to the domain of fiction.
The letters that were found after years are the evidence of hard intellectual work that had been conducted under very infavourable conditions. They refer to the time when Wittgenstein was writing "Tractatus" while Frege was working on his articles "Thought" and "Negation". Correspondence between Frege and Wittgenstein prove the common will of communication and mutual understanding. Thus remains the question why those two close and well known to each other thinkers have not realized that willingness.
At the end of his life Gottlob Frege made his last attempt to ground mathematics. An essential role in this unfinished project was given to the analysis of the sources of knowledge. This last attempt reveals Frege's epistemological views. First of all, it shows the scope and the direction of changes his views took in comparison with Kant's conception. Besides, it allows us to see exactly what views Frege held at the end of his life. The unfinished character of Frege's attempt invites a continuation of this way of grounding mathematics.
The article is an attempt to present the overall consideration on God, which is, in a sense, the core of Jerzy Perzanowski's philosophical theory. Although a number of issues are considered, the most attention is paid to Perzanowski's critical analysis of some well-known ontological arguments and to the presentation of his own version of the argument.
The paper investigates the impact of Leibniz’ thought on contemporary philosophy. It focuses on two philological issues: (1) the debate on the misunderstandings connected to the formula “lingua characterica”, used by Gottlob Frege to describe of Leibniz’ philosophy; (2) an interesting interpretation of “ars inveniendi ” as formulated by Hans Hermes.
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