Full Idea
My take on truth is a fairly deflationary one: The role of the truth predicate is to enable us to assent to sentences we can't explicitly exhibit.
Gist of Idea
Truth lets us assent to sentences we can't explicitly exhibit
Source
Jody Azzouni (Deflating Existential Consequence [2004], Intro)
Book Reference
Azzouni,Jody: 'Deflating Existential Consequence' [OUP 2004], p.9
A Reaction
Clearly this is a role for truth, as in 'I forget what he said, but I know it was true', but it isn't remotely what most people understand by true. We use 'true' about totally explicit sentences all the time.