Keith Simmons is a contemporary analytic philosopher specializing in the philosophy of language, logic, and theories of truth. He is best known for his sustained engagement with the Liar paradox and his development of a singularity theory of truth as an alternative to both classical and deflationary accounts. His work critically examines the limits of truth predicates and the expressive power of natural language.
Developed the singularity theory of truth to resolve semantic paradoxes including the Liar
Authored Universality and the Liar (1993), a seminal treatment of truth and diagonal arguments
Authored Singularities of Truth (2018), extending his contextual approach to paradox
Mounted influential critiques of deflationary theories of truth on expressive-power grounds
Contributed to the debate over whether truth is a substantial versus minimal property
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