[Latvia thinks for a moment. Luckily for him the people he's been close to have been from around the same time as him. There's Russia, but he doesn't want to spend the time around him to explain]

You could try... whether he believes you or not I suppose it doesn't really matter.

He's from a long time ago, right? So... the time we're from, he's already returned from Mayfield. So whether you tell him or not it won't change the course of history because for us, whatever you've told him has already had its effect.

... Or something like that.

I don't think people remember when they come back. People told me that I was here before but I don't remember a thing either.