*Original Title: "Humamae vitae: cosi le nata e guai a chi le tocca" Google translation, lightly copy-edited for clarity The demolition project aimed at "Humanae Vitae" --- Paul VI's 1968 encyclical that said no to artificial contraceptives --- now faces an unexpected stumbling block in a book that reconstructs the genesis of that text, thanks to the access, for the first time, to the secret documents concerning it, authorized by Pope Francis in person: Gilfredo Marengo, "The birth of an encyclical, 'Humanae vitae' in the light of the Vatican archives", Libreria Editrice Vaticana, Vatican City, 2018.