Full Idea
Truth, in the only sense in which we have a vital and working notion of it, is rational acceptability.
Gist of Idea
Truth is rational acceptability
Source
Hilary Putnam (Why Reason Can't be Naturalized [1981])
Book Reference
'Epistemology - An Anthology', ed/tr. Sosa,E. /Kim,J. [Blackwell 2000], p.315
A Reaction
I smell a circularity somewhere in there, probably in 'rational', though it could be in 'acceptable'. Putnams's views on truth tend to shift a lot. He denies that evolutionary survival is a criterion.