The Italian philosopher F. Rossi-Landi (1921-1985) conducted pioneering work in the philosophy of language. His research is characterised by a critique of language and ideology in relation to sign production processes and the process of social reproduction. Between Signs and Non-Signs is a collection of 14 articles by Rossi-Landi written between 1952 and 1984 and gives an overview of his contribution to the philosophy of language and his critique of Charles Morris, Wittgenstein, Bachtin, and his Italian contemporaries. It is in fact a project initiated by the author and now posthumously completed by the editor, with a complete bibliography of Rossi-Landi's extensive work. The introduction gives a fresh view of the importance of Rossi-Landi's work to modern critical theory. 1. A Fragment in the History of Italian Semiotics 2. Signs about a Master of Signs 3. On Some Post-Morrisian Problems 4. Wittgenstein, Old and New 5. Towards an Analysis of Appraisive Signs in Esthetics 6. On Absurdity 7. On the Overlapping of Categories in the Social Sciences 8. Introduction to Semiosis and Social Reproduction 9. Articulations in Verbal and Objectual Sign Systems 10. Sign Systems and Social Reproduction 11. Ideas for the Study of Linguistic Alineation 12. Signs and Bodies 13. Ideas for a Manifesto of Materialistic Semiotics 14. Towards a Theory of Sign Residues.