Full Idea
According to the deflationary picture, believing that a theory is true is a trivial step beyond believing the theory.
Gist of Idea
The deflationary picture says believing a theory true is a trivial step after believing the theory
Source
Paul Horwich (Truth (2nd edn) [1990], Ch.2.17)
Book Reference
Horwich,Paul: 'Truth (2nd edn)' [OUP 1998], p.57
A Reaction
What has gone wrong with this picture is that you cannot (it seems to me) give a decent account of belief without mentioning truth. To believe a proposition is to hold it true. Hume's emotional account (Idea 2208) makes belief bewildering.
Related Idea
Idea 2208 Belief is just a particular feeling attached to ideas of objects [Hume]