I meditated on the mystery of marriage, placing it in the framework of the total mystery of life, in the divine plan of nature and of history. And I was struck by the twofold meaning which sexual union has for mankind and which so greatly differentiates it from animality. Procreation on the one hand, the loving union of two beings on the other hand. It is clear that animals know only the first of these laws. It is obvious that if objectively the purpose is more important than the meaning, subjectively it is the meaning that comes first for conscience.
People marry because they love each other, for the purpose of founding a family.
But the child is not the immediate aim but rather the multiple blessing of married love that is reflected in this aim. Now it seems rather that life should be limited. To a philosopher, a similar structure is to be found in a particular case of a more general provision of the creator that reveals his power, wisdom and his art of unifying distinct essences, as in the Incarnation. The soul and the body that make up our being are also two distinct entities, which only death separates. Since these two entities are distinct, the problem to be solved is whether human art in thought and in act, in philosophy and in technique, has the power and the duty or the right to disunite them, Here it is necessary to grasp the wisdom of the Church.