person1980s-present

Timothy Williamson

Disciplines:

Summary

British philosopher who developed the knowledge-first epistemology — knowledge is the most fundamental epistemic state, not analyzable into justified true belief — and has contributed to the logic of vagueness and modal epistemology.

Core Contribution

Knowledge and Its Limits: knowledge is prime — it cannot be analyzed into belief plus conditions; the norm of assertion is knowledge; knowledge-how and knowledge-that are both forms of knowledge. Sorites paradox: vagueness is epistemic — there is a sharp boundary, but we cannot know where it is. The Philosophy of Philosophy: philosophical thought experiments have the same epistemological status as ordinary intuitions about cases.

Key Spikes & Highlights

Knowledge-first is methodologically significant: instead of asking 'what is knowledge?' Williamson asks 'what role does knowledge play?' — making knowledge the explainer, not the explained.
His epistemic theory of vagueness — borderline cases are cases of ignorance, not cases of indeterminate truth — is widely contested but generates a technically precise research program.
Was Wykeham Professor of Logic at Oxford from 2000 — one of the most prestigious philosophy chairs in the world — and is probably the most cited living analytic philosopher.

Notable Works & Achievements

Identity and Discrimination

Vagueness

Knowledge and Its Limits

The Philosophy of Philosophy

Modal Logic as Metaphysics

Historical Influences

Michael Dummett Gareth Evans David Lewis

Intellectual Lineage

Analytic Philosophy Oxford Philosophy

Contemporaries & Peers

John Hawthorne Jason Stanley

Minds Influenced

Epistemology Research Modal Epistemology

Intellectual Posterity

Knowledge-First Epistemology Epistemic Vagueness

Discussing