I would tear the sky apart, I reduce the entire solar system to a tiny cinder for anyone I love. If I was about to do that, if it got to that point of desperation then I would have one desire: someone would stop me.
Twelfth Doctor
In a deleted scene from Knock, Knock.
He practically described what he did for Clara in Hell Bent, or at least just how far he was willing to go to save her. Clara did end up stopping him in the end due to his desperation, since he was willing to let the break the universe just to keep her alive and safe.
(via clara-is-brave)