The Master nodded in satisfaction, reaching over to rest one hand on the Doctor's knee, giving it a light squeeze. "Thank you. You know this isn't easy for me... none of this. Old habit die hard and we do have a tendency to intentionally aggravate each other. But you are my friend, Doctor. Never doubt that. I don't want to botch it either, not after knowing what's possible," he said, looking over at Missy's journal.