Frontmatter -- Preface -- Contents at a glance -- Contents in detail -- General introduction: the question of intellectual progress -- 1. Historical and theoretical introduction -- Division I: World -- Introduction -- 2. Phenomenology as fundamental ontology -- 3. Sein and knowledge -- Division II: Sign -- Introduction -- 4. Categories of experience -- 5. Synechism and the modes of existence -- Division III: World and sign -- Introduction -- 6. Sein and the categories of experience -- 7. Semiotic continuity of the world -- Conclusion: Viae inventionis et resolutionis -- Appendices -- References -- Index