"I can't make you believe." He sighed and shrugged his shoulders. Again, he censored the things he wanted to say, because he could anticipate the Master's reply, and it would only make matters worse.
He paused and recalled what Missy had said. "Be patient. Remember what I felt like when I just came out of the Time War." The Doctor shook his head. "Both of which I botched. Every word I speak, I feel like I'm only digging a deeper hole, which I'll never get out of. I've already upset you. You already mistrust me." A pause. "We do this because our egos keep clashing. Isn't that obvious? What sort of standards are you talking about?"