They will not die again, because this time we would have more information to go on, and we could save them!

[He is getting more insistent now.]

What of your sister? Or even the other version of her, from another world? You cannot tell me that you would not take the risk for her sake!

And for all of you- [He is addressing the whole crowd now, not just the PCs. Because he has to win them over too.] -yes, it is a risk. But aren't your loved ones worth it? That is what I am fighting for, so that my daughters and grandchildren may survive the Calamity and live on. Don't you want that too?

This is our best option.