hello all

I posted this over at translators  before I noticed this community. Hopefully, I haven't violated the rules by reposting here. I was just thinking that this community might have a members with a skill at taking a more poetic license.  I was wondering if anyone could translate this quote  "not flesh and blood, but heart which makes us fathers and sons." into French? I take it there isn't a direct translation but are there any concepts in French that capture the same idea?