From the Holy Father's Message for this forty-first World Day of Peace. This builds nicely on his remarks in his Sunday Angelus address, or vice-versa:
The family, society and peace
2. The natural family, as an intimate communion of life and love, based on marriage between a man and a woman, constitutes “the primary place of ‘humanization' for the person and society”, and a “cradle of life and love”. The family is therefore rightly defined as the first natural society, “a divine institution that stands at the foundation of life of the human person as the prototype of every social order”.
3. Indeed, in a healthy family life we experience some of the fundamental elements of peace: justice and love between brothers and sisters, the role of authority expressed by parents, loving concern for the members who are weaker because of youth, sickness or old age, mutual help in the necessities of life, readiness to accept others and, if necessary, to forgive them. For this reason, the family is the first and indispensable teacher of peace. It is no wonder, therefore, that violence, if perpetrated in the family, is seen as particularly intolerable. Consequently, when it is said that the family is “the primary living cell of society”, something essential is being stated. The family is the foundation of society for this reason too: because it enables its members in decisive ways to experience peace. It follows that the human community cannot do without the service provided by the family. Where can young people gradually learn to savour the genuine “taste” of peace better than in the original “nest” which nature prepares for them? The language of the family is a language of peace; we must always draw from it, lest we lose the “vocabulary” of peace. In the inflation of its speech, society cannot cease to refer to that “grammar” which all children learn from the looks and the actions of their mothers and fathers, even before they learn from their words.