1. Bühler's Axiomatic Project.- 2. Phonology, Diacrisis, and Abstraction.- 3. The Two-Field Theory of Language.- 4. From Perception to Metaphor.- 5. Clarifying Language by Contrast.- 6. Conclusion: Some Open Questions.- A. The Key Principle: The Sign Character of Language.- B. Speech Action and Language Structure.- C. The Structural Model of Language.- D. The Schema of Language Functions.- Name Index.
