The author made a methodical analysis of the Encyclical Humanae Vitae, which on 25 July 1968. Paul VI issued the encyclical against the view generally expressed by the two commissions "ad hoc" and by many bishops, theologian-do-s and-es expert who had been consulted. The unchanging character whose dream Leglise however incompatible with the human condition and the non-receipt of this encyclical is proof. "That does not wait for a successor of Benedict XVI that he make amends: hope that will come soon, a Pope who finally silent about these sexual issues to be concerned about making audible the Christian faith to modern man. " (P. 152)