The essays in this volume, first presented at an international conference held at the University of Urbino, Italy, in 2011, explore the different senses of realism, arguing both for and against its distinctive theses and considering these senses from a historical point of view. The first sense is the metaphysical thesis that whatever exists does so, and has the properties it has, independently of whether it is the object of a person's thought or perception. The second sense of realism is epistemological, wherein realism claims that, in some cases, it is possible to know the world as it exists in and of itself. A third sense, which has become known as ontological realism, states that universals exist as well as individuals. The essays collected here make new contributions to these fundamental philosophical issues, which have largely defined western analytic philosophy, from Plato and Aristotle to the present day.

The book aims at a comprehensive account of the relationship between Wittgenstein s Tractatus Logico-Philosophicus and Russell s philosophy as it developed between 1903 and 1918. The focus is on the central nucleus of the Tractatus, i.e., on its ontology and the picture theory of language. On Russell s side, the multiple-relation theory of judgment has been chosen as the leading theme around which the presentation of several other issues is organized. Whereas the similarity between Russell s and Wittgenstein s problems is pointed out, the deep difference between their solutions is acknowledged, in particular with reference to the opposition between objects and names on the one hand, and facts and propositions on the other."

Gustav Bergmann (1906-1987) was, arguably, one of the greatest ontologists of the twentieth century. In 2006 and 2007, after a period of relative neglect, international conferences devoted solely to Bergmann's work were held at the University of Iowa in the USA, Universite de Provence in France, and Universita degli Studi di Roma Tre in Italy. The fifteen papers collected in this volume were presented at the third of these conferences, in Rome, and are here divided into three sections: "Categories of a realistic ontology," "World, mind, and relations," "Metaphysics of space and time.""