I'm really no expert, decades went by. A while ago I read in Klaas Landsman's Book, it is very nice: "This book studies the foundations of quantum theory throu

I'm really no expert, decades went by. A while ago I read in Klaas Landsman's Book, it is very nice: "This book studies the foundations of quantum theory through its relationship to classical physics." https://www.dbooks.org/foundations-of-quantum-theory-3319517775/ https://www.dbooks.org/foundations-of-quantum-theory-3319517... (beware of the Bohr Topos)