Abstract: After a brief introduction about the problem of leopardian sources, I wish to introduce here a description of the diffusion of Addison’s theories about the Imagination in Italy at the time of Leopardi, trying to highlight their influence on his thinking and his philosophy. The third chapter is dedicated to the analysis of an important excerpt of the Zibaldone where Leopardi quotes Addison and his Catone to introduce an interesting reflection about the pleasure of beauty and the role of imagination, almost as a way to face Addison issues. This excerpt represents an occasion to compare the theories of Addison and Leopardi about Aesthetics and also the similarities and the differences between them. The last part of the paper is dedicated to the results of the analysis and the conclusions.
Abstract: The aim of this paper is to investigate in three steps to which philosophical consequences the conception of fiction as hypothesis or heuristic assumption can lead. I will first sketch the understanding of an idea as a heuristic fiction following Kant. In a second step, I will examine the critique of Hans Vaihinger to the Kantian comparison between fiction and hypothesis and his praise for the stronger reading of fiction by Salomon Maimon. In the end I will develop some remarks on the systematic consequences of the determination of fiction as a hypothetical or heuristic assumption in the literature.