On July 25, 1968, Pope Paul VI issued the encyclical letter Humanae Vitae, which means, “Of Human Life.” In that relatively short document, which you can find at priestsforlife.org, he outlines the Church’s vision of human life, marriage, and the connection between human love and the creative action of God.
Love and life are two very simple and very similar words, and they represent two gifts that go together. Love leads to life; it does not close it off. Love welcomes life, it is not afraid of it. Love and life go together because ultimately, they are simply two aspects of the one God.
One of the best ways you can observe this anniversary of Humanae Vitae is to read it. Go to priestsforlife.org and you will find the text along with helpful commentary.