The whole thing makes him think of Raphael and it's enough to make him want to destroy her. Everything about this...

"I'm going home" he snarls, "I am. She wouldn't have sent me away."

He resolves to observe the torture of the heretics today. To release these feelings of rage and pain on those who disobeyed his will because...

"Tout that 'I've traveled reality' thing again. It just makes you seem weak doctor foster. You humans are small minded damaging creatures. You take and destroy. I am working. For the greater. Good."

He snorts, "you all need a firmer hand. That much is clearer to me now."