Roderick Firth (January 30, 1917 – December 22, 1987) [1] was an American philosopher. He was Professor of Philosophy at Harvard University from 1953 until his death. [1]
Firth earned his Ph.D. in philosophy from Harvard in 1943. His thesis was entitled Sense-Data and the Principle of Reduction.
He taught at Brown University before joining the Harvard faculty in 1953. [1]
Firth is noted for his defense of the ideal observer theory in ethics [2] and for his exploration of radical empiricism. [3] Firth also defended a form of semantic holism which he referred to as a "coherence theory of concepts" distinct from both the coherence theory of truth and coherence theory of justification. [4] Firth debated his views on the nature of concept formation and epistemic privilege with Wilfrid Sellars against whom he defended the views of C. I. Lewis. [5] [6]