From Familiaris Consortio, Pope John Paul II -
All members of the family, each according to his or her own gift, have the grace and responsibility of building, day by day, the communion of persons, making the family "a school of deeper humanity"(59): this happens where there is care and love for the little ones, the sick, the aged; where there is mutual service every day; when there is a sharing of goods, of joys and of sorrows.
A fundamental opportunity for building such a communion is constituted by the educational exchange between parents and children,(60) in which each gives and receives.
Family communion can only be preserved and perfected through a great spirit of sacrifice. It requires, in fact, a ready and generous openness of each and all to understanding, to forbearance, to pardon, to reconciliation. There is no family that does not know how selfishness, discord, tension and conflict violently attack and at times mortally wound its own communion: hence there arise the many and varied forms of division in family life. But, at the same time, every family is called by the God of peace to have the joyous and renewing experience of "reconciliation," that is, communion reestablished, unity restored.