This collection of twenty papers deals with a wide range of issues in philosophy of language, epistemology, history of philosophy, philosophy of psychology, jurisprudence and philosophy of science. It should be of interest to, and prove a stimulus for new work by, researchers and practitioners working in any of these fields. Tracing a route backwards through the papers as presented here, the final group is largely concerned with how empirical knowledge may be acquired through evidence in states of uncertainty; the middle group explores how such evidence often requires or results in conceptual innovation and is given to us in language the meaning of which may be difficult to determine; the first group explores how a theory of meaning can be constructed for natural and artificial languages. The papers exhibit a distinctive analytical perspective and a great deal of thematic continuity, underpinned by commitment to the richness both of language and of enquiry and opposition to simplistic or dogmatic formalisations and analyses.