He can't SEE anything with his outside eyes.

But he sees everything with his inside eyes--everything that I play.

Why, Lady of the Roses, he's even seen this--all this here.

I told him about it, you know, right away after I'd found you that first day: the big trees and the long shadows across the grass, and the roses, and the shining water, and the lovely marble people peeping through the green leaves; and the sundial, and you so beautiful sitting here in the middle of it all.

Then I played it for him; and he said he could see it all just as plain! And THAT was with his inside eyes! And so, if Joe, shut up there in his dark little room, can make his THINK bring him all that, I should think that YOU, here in this beautiful, beautiful place, could make your think bring you anything you wanted it to." But Miss Holbrook sighed again and shook her head.
"Not that, David, not that," she murmured.