Tick tock goes the clock... even for the Doctor

D'you wanna come with me? 'Cause if you do then I should warn you; you'll see all sorts of things. Ghosts from the past. Aliens from the future. The day the Earth died in a ball of flame. It won't be safe, it won't be quiet and it won't be calm. But I'll tell you what it will be; the trip of a lifetime!

"He's like fire and ice and rage. He's like the night, and the storm in the heart of the sun. He's ancient and forever. He burns at the center of time and he can see the turn of the universe. And... he's wonderful."