Ontological commitment implies that each theory is supposed to specify the type of entities that form its components. Representatives of a theory share an ontological commitment in relation to the objects they refer to. There are theories that admit the existence of universals while others do not. As there are different ways of speaking about universals it is necessary to decide what a universal term corresponds to. It is essential to have a criterion that enables us to decide which kinds of objects are allowed as references for the terms used. In this volume two different approaches are discussed: first, in cases where only extensional languages are accepted; second, when intensional elements are required to determine the meaning such terms as "Sachverhalt", intentional statements or representations. The ontological commitment associated with extensional theories exclusively admits the existence of physical objects, whereas intensional theses additionally include universal and abstract entities. The study of ontological commitment enables us to measure the ontological economy of theories. This serves as a basis for the choice of theory. The authors of this volume discuss relevant issues of both models and provide new solutions.

The book links the concept of intention to human action. It provides answers to questions like: Why do we act intentionally? Which impact do reasons and motives have on our decisions? Certain events are identified as intentional actions when they are considered as being rationalized by reasons. The linguistic description of such events enables us to reveal the structure of intention. The mental and the linguistic constitute irreducible ways of understanding events. Among the topics discussed are intentionality, actions, the linguistic form to talk about intentionality and actions, Brentano's view of intentionality, the phenomenological approach to intention and Wittgenstein's proposals. The contributions by Wolfgang Kunne, Peter Simons, Christian Bermes, Kevin Mulligan, Severin Schroeder, Antonio Marques, Margit Gaffal, Michel Le Du, Jesus Padilla Galvez, Bernhard Obsieger and Amir Horowitz show that actions and decisions are guided by intentional considerations.

The book is exceptional because it applies the notion of foms of life to the context of human action. It provides answers to the following questions: Why do we act in a specific way? Why do we make particular decisions? Does one's form of life and language games determine our actions and decisions? Wittgenstein proposes a holistic method which enables us to give coherent answers to these questions. To answer the question of the contents of actions and decisions we have to explain how we have institutionalized these actions or decisions. To this aim we shall reveal the frame within which language games are introduced and have come to function as practice and custom. The scheme of order underlying the language games is illustrated. Human actions and decisions follow particular rules. By highlighting the underlying scheme of order we may gain a perspicuous view of these rules. The aim of this book is to show that actions and decisions generate rational choice. This choice is explained by demonstrating the particular functions of the language games involved.

To what extent can we doubt certainties? How are certainties expressed in words? Which language games convey certainty? To answer these questions we have to recall the method Wittgenstein used in his investigations. When we look at language games and forms of life as inseparable phenomena, do forms of life then provide any certainty? On the other hand, do we automatically relapse into relativism once we doubt certainties? Which formal structures underlie certainty and doubt? The book is intended to answer these questions.

Ludwig Wittgenstein's writings inspired contemporary philosophical thinking and advanced many issues that had been addressed by traditional philosophy. The questions raised by the Viennese philosopher initiated debates on a reconsideration of philosophical terminology. This is especially true for a term that has generated at least three significant controversies since its creation and will probably generate more disputes in the following years. It is the expression "form(s) of life" which translates into German as "Lebensform(en)" and "Form des Lebens". The present volume contains contributions on forms of life, language games and the influence of Wittgenstein's philosophy on other scholears.

If we read Ludwig Wittgenstein s works and take his scientific formation in mathematical logic into account, it comes as a surprise that he ever developed a particular interest in anthropological questions. The following questions immediately arise: What role does anthropology play in Wittgenstein s work? How do problems concerning mankind as a whole relate to his philosophy? How does his approach relate to philosophical anthropology? How does he view classical issues about Man s affairs and actions? The aim of this book is to investigate the anthropological questions that Wittgenstein raised in his works. The answers to the questions raised in this introduction may be found on the intersection between forms of life and radical translation from another culture into ours. The book presents an extensive analysis of anthropological issues with emphasis on language and social elements."

This volume gathers papers, which were read at the congress held at the University of Castilla-La Mancha in Toledo (Spain), in September 2007, under the general subject of phenomenology. The book is devoted to Wittgenstein's thoughts on phenomenology. One of its aims is to consider and examine the lasting importance of phenomenology for philosophic discussion. For E. Husserl phenomenology was a discipline that endeavoured to describe how the world is constituted and experienced through a series of conscious acts. His fundamental concept was that of intentional consciousness. What did drag Wittgenstein into working on phenomenology? In his 'middle period' work, Wittgenstein used the headline 'Phenomenology is Grammar'. These cornerstones can be signalled by notions like language, grammar, rule, visual space versus Euclidean space, minima visibilia and colours. L. Wittgenstein's main interest takes the form of a research on language.

The problems associated with understanding come to light in many facets of our lives. This volume is dedicated to describing these facets and clarifying problems related to levels of comprehension, conceptual analysis, understanding oneself and the other as well as cultural aspects of understanding. The authors address the topic in different theoretical frames such as hermeneutics, phenomenology, transcendental, and analytic philosophy.