He's looking up in prayer, and one can only wonder what interior dialogue He's having with His Father.
When I finally got onto my knees in prayer - for the first time in what seems like forever - I felt very much the same. I was just looking up at God the Father and speaking to Him without words (since my mouth was bound shut anyway).
I prayed the Divine Mercy chaplet silently and realized that in praying each bead silently, I focused more on the words. Don't get me wrong - my mind still wandered to everything from Vincent to why Lucy (my cat) chose that particular moment to whip her tail in my face - but I definitely focused more on what I was "saying" without actually uttering anything.
There's something to be said for silence, after all... :)