He watches the Doctor in silence as he speaks, slowly rotating his glass on the table in front of him. Arthur has always had a weakness for being told stories like this, right back into his childhood, and he rests his chin lightly on one palm while he's given the description of the Doctor's home planet. It was something he couldn't ever remember really being that heavily touched upon in the show itself, save for in references to the Time War, and to hear it described with such a tone of longing..

Arthur sighs, gently, and gives a small nod..

"It sounds beautiful. I wish it was possible to see it now."