Joy, The Doctor and others in “Joy to the World”

H-How can there be two of you?

There aren't. He's the future. He's me after I get the code.

I'm not the future - he is the past. The future is this way. Come on.

No, no! How does this work? How do I get to be you?

The long way 'round.

Yes, but how long?!

You'll find out.

What do I do, where do I go?!

You will find out.

Oh, do you see?! That is why nobody likes you! You have to be mysterious all the time! That's why everyone leaves you. That is why you are always alone.