This is a collection of essays about logic and its applications to various philosophical problems. In general, it is argued that logic constitutes an important device of philosophical analysis. Concerning the nature of logic the author defends the thesis that first-order logic is the logic. Among the philosophical problems to which logic is applied in the essays are: truth, consistency, realism, foundations of semantics, psychologism, undetermination of theories by empirical data, modalities, value concepts, identity, vagueness, God's existence, transcendentals, legal reasoning, (...) category mistakes, bivalence, the cognitive relation, and meaningfulness. (shrink)

This book contains writings that pertain to the history of the philosophy of logic and mathematics, the Lvov-Warsaw School, epistemology, and key events in the development of the analytic philosophy in the 20th century. The essays are written by Jan Wolenski, an internationally acclaimed historian of logic and a member of the Polish Academy of Sciences, the Polish Academy of Arts and Sciences, and the International Institute of Philosophy.

Semantic Loops - Semiotics - Logic as Calculus - Logic as Universal - Syntax Semantics - Truth - Naturalism and the Genesis of Logic - Theology - Bivalence - Proof - Constructivism - Metamathematics - Truth-Makers - Logical Determinism - Semantic Theory of Truth - Paradoxes.