What can we do?

Soo.. my and my partner have been together since we were 16 and we always both said we wanted a really big family. 13yrs and 4 kids later my partner now has decided he doesn't want anymore kids. His reason for this is bc he says 4 is enough.. I know how blessed I am to have 4 children already( before I get called out on being greedy) but I always wanted 6+ kids. I feel like he's backed out of what he originally said he wanted. I understand he's done but I still want more kids. Am I wrong for wanting to carry on? Feel like we maybe are not taking each other's feelings on board but how can we come to an agreement when either way we both want different things? And one else been in this situation? I don't know what to do ..