Full Idea
The early German Romantics argued that art pointed to a more all-inclusive conception of reason, which can offer ways of articulating what is not conceptually accessible.
Gist of Idea
Art can make reason more all-inclusive, by articulating what seemed inexpressible
Source
Andrew Bowie (Introduction to German Philosophy [2003], 5 'Reason')
Book Reference
Bowie,Andrew: 'Introduction to German Philosophy' [Polity 2003], p.103
A Reaction
[This is Novalis, F.Schlegel, Schleiermacher, and Hölderlin] I'm in favour of expanding reason, to include assessment of situations and coherence, rather than just stepwise reasoning. Not sure that art 'articulates' something new.