Every night now, after bed, George stealthily switches his light back on and opens Harry Potter at the page with the folded-down corner. He has already learnt to fold the corners! This alone makes tears of joy prickle my eyes. I spy on him through the crack in the door: he moves his lips and frowns as he follows his finger across the page. He is lost to me, doing battle with dragons and wizards – and I couldn’t be happier to see him go.