On August 22, 2018, John and Claire Grabowski took part in a panel on "The Logic of Complementarity: Why Mothers and Fathers Matter in Amoris laetitia" at the World Meeting of Families in Dublin. They focused on the difference between the fundamental vocations and gifts of each sex versus the necessary flexibility of roles and responsibilities in the life of a family, drawing upon both recent magisterial teaching and our own experience as parents.