Fratelli Tutti is Pope Francis' new encyclical on universal brotherhood. A book that adds to the countless teachings that the Holy Father wants to offer to the whole world. This encyclical is very significant for the place and date of the encyclical's release. In fact, the Holy Father signs this encyclical on universal brotherhood on the tomb of the Seraphic Father Saint Francis of Assisi. Perhaps this is a warning to the world to be brothers.