Christian couples should be aware that they are called to sanctity themselves and to sanctify others, that they are called to be apostles and that their first apostolate is in the home. They should understand that founding a family, educating their children, and exercising a Christian influence in society, are supernatural tasks. The effectiveness and the success of their life — their happiness — depends to a great extent on their awareness of their specific mission.
But they mustn't forget that the secret of married happiness lies in everyday things, not in daydreams. It lies in finding the hidden joy of coming home in the evening, in affectionate relations with their children, in the everyday work in which the whole family cooperates; in good humour in the face of difficulties that should be met with a sporting spirit; in making the best use of all the advantages that civilisation offers to help us rear children, to make the house pleasant and life more simple.
I constantly tell those who have been called by God to form a home to love one another always, to love each other with the love of their youth. Any one who thinks that love ends when the worries and difficulties that life brings with it begin, has a poor idea of marriage, which is a sacrament and an ideal and a vocation, It is precisely then that love grows strong. Torrents of worries and difficulties are incapable of drowning true love because people who sacrifice themselves generously together are brought closer by their sacrifice. As Scripture says, aquae multae, a host of difficulties, physical and moral, non potuerunt extinguere caritatem, cannot extinguish love (Cant 8:7). (Conversations, 91)