"Honor your father and mother" is a commandment which forms a hinge between the two sections of the law, the commandments entreating us to love God, and those asking us to love others. The union between a man and a woman who love each other creates that unity of "one flesh": the expression of this love coincides radically with that through which they can pass life on to their children. For this reason, human fertility is inseparable from the couple's love for each other. This special unity is a reflection of the power of God's creative love for the person of the child, conceived with the parents' bodies.  The subject engendered in love is called into existence through the love of God, created in His image and likeness. To be a child is to be the fruit of personal love, received as a gift. The love with which God first loves each person, and the loves that are allied with this primary love, are the ultimate guarantee of the absolute value of each human person.