Sleep

"You have to save them," she cried.

"No," he sank to the charred ground. "I don't think so, not this time. I'm feeling a bit tired of all this. Time for the universe to grow up, I think."

"But, Doctor, they need you."

"Bodies, bodies everywhere, but not a drop of blood," he murmured, unfocussed eyes on the horizon. "I'm going to go to sleep now. I'll sleep and the universe will still go on, you'll see."

"You can't, Doctor. You simply can't!"

"Why not!" he demanded, eyes snapping open. "It managed to survive without me for millennia.