"He does," she confirmed. It wasn't necessarily a physical resemblance. It was in the way they moved and acted. Their determination and their intelligence and their wide eyed excitement and the way that they saw things that other people often missed. "He's seen so much of it that you'd think he should have stopped being amazed by it a long time ago, but there's always something new to explore for the Doctor."

And someone new to explore it with him. Someone to remind him of just how beautiful and wonderful it actually was out there.