In the words of the encyclical, “to experience the gift of married love while respecting the laws of conception is to acknowledge that one is not the master of the sources of life but rather the minister of the design established by the Creator” (HV §13). Those whose abstinence in the fertile period reflects their refusal to claim mastery over the sources of life by technologically blocking conception, come to the use of the infertile period bearing witness to human dignity, first and foremost the human dignity of children, bearing witness that they are not products but gifts of which we are not the makers but the ministers.