The Doctor: I'm not running away. But this is one corner of one country on one continent on one planet that's a corner of a galaxy that's a corner of a universe that is forever growing and shrinking and creating and growing and never remaining the same for a single millisecond, and there is so much—so much to see, Amy. Because it goes so fast. I'm not running away from things, I am running to them. Before they flare and fade forever.
Doctor Who. "The Power of Three"