"That we were going to travel to every star..." Of course the Doctor remembered - their promise was written upon the Master's face every time he looked at him. The Doctor rubbed the back of his neck, sighed, and got out of his chair to walk the short distance to where the Master sat on the floor. There, he lowered himself to sit beside the Master, keeping a discreet distance between them out of respect. "Remember, I'm stuck here too. Another reason why I took off. I was getting antsy. Yeah, I know I shouldn't have gone without telling anybody, I should've taken you. I can't undo the mistake I did, but I can promise to do better, next time."