What is urgently called for is a general mobilization of consciences and a united ethical effort to activate a great campaign in support of life. All together, we must build a new culture of life: new, because it will be able to confront and solve today's unprecedented problems affecting human life; new, because it will be adopted with deeper and more dynamic conviction by all Christians; new, because it will be capable of bringing about a serious and courageous cultural dialogue among all parties. While the urgent need for such a cultural transformation is linked to the present historical situation, it is also rooted in the Church's mission of evangelization. The purpose of the Gospel, in fact, is "to transform humanity from within and to make it new". Like the yeast which leavens the whole measure of dough (cf. Mt 13:33), the Gospel is meant to permeate all cultures and give them life from within, so that they may express the full truth about the human person and about human life.
We need to begin with the renewal of a culture of life within Christian communities themselves. Too often it happens that believers, even those who take an active part in the life of the Church, end up by separating their Christian faith from its ethical requirements concerning life, and thus fall into moral subjectivism and certain objectionable ways of acting. With great openness and courage, we need to question how widespread is the culture of life today among individual Christians, families, groups and communities in our Dioceses. With equal clarity and determination we must identify the steps we are called to take in order to serve life in all its truth. At the same time, we need to promote a serious and in-depth exchange about basic issues of human life with everyone, including non-believers, in intellectual circles, in the various professional spheres and at the level of people's everyday life. (Papal Encyclical, Evangelium Vitae, 25 March 1995).