"And you think I'm arrogant. We have proof of people who have gone and come back, they went exactly back to the same moment, they remembered nothing of this place. The people who brought us here didn't even mean to do it exactly, why would we be better at magic than they are?" Jayce looks at him and scowls. "Don't move, you'll hurt yourself." They may be arguing but it doesn't change that Jayce's first priority is Viktor's safety. That's a huge part of this. He steps over to the bed and very carefully tries to usher him back down.

"Is it our place to create a new timeline? You don't think that's selfish too, making things how you want them to be? If that's even possible, it's still a risk. One that is not worth it to me." Even if they somehow get the spell, if they can attempt to mess with the way it works, which he doesn't think is possible, there is no foolproof assurance. There is no perfect promise here.

Jayce does sit back down on the bed if it's the only way to get Viktor to do it, knowing that by putting distance between them he was basically asking for it. It's difficult, he is angry and upset, but running away from Viktor isn't the intention.

"V. You're acting like I don't love Piltover either, as if I don't know where my responsibilities lie, that I don't have unfinished business. We shared a dream." To do things better for their people, to change the world like they already had. Jayce knows there is a trade-off. "I will never see my mother again. I'll never have Hextech. I won't be able to fix what I broke or even try." They have a poor substitute here, for his most beloved creation. As if it wasn't his life's work like the Hexcore was for Viktor.

"I know where my priorities are. They're with you, with us. You'd really destroy everything we have for this?"