This thesis is the fruit of an interpretative critical analysis of the bases of Moral Theology elaborated by Bernhard Häring which, due to is characteristics and proposals, is here given the name Morals of Dialogue. Moral Theology is a pratical science and, because of this it is important to emphasize that the theoretical construction of the author has as its foundation his day-to-day existence, the story of a long and productive life, in wich he perceived how to make Dialogue a welcome experience, which he built on and transmitted to others. In it, his life and his work are fused and confused, to show that Dialogue is an ethical course necessary for the life of humanity and that it should therefore be recommended to all people as the novelty that is present at the heart of the Christian ethos, as the reference of a trinitarian monotheistic religion which accepts it and carries it out at source. This being so, Dialogue could not fail to be also accepted by the Church of Jesus Christ as an ethical-moral commitment capable of making it a fertile and promissing sign of the Kingdom of God. What we can say is that the Morals of Dialogue, in the light of the Law of the Spirit which gives life in Christ, brings indispensible new elements for the reconfiguration of the bases of Christian morals, which is good news for todays world. The consequences of this are already being felt. The special morals for dealing with questions related to the day-to-day life of men and women of these days already does so in a renewed perspective. Creative freedom and faithfulness are necessary pressuppositions for the development of responsible, healthy people who, in partnership, wish to seek a life full of meaning. The Church of Jesus Christ is not beyond this perspective of renewal. The ready adoption of sincere and healthy attitudes in relationships, which guarantee Dialogue as a necessary mediation for the re-elaboration of a Christian way of life which is more fraternal and solidary, is an extremely productive course. This course invites us to look inside and outside ourselves, in the recuperation of a unit which is open to welcome enriching differences. This is not a naïvely optimistic vision. There are challenges to be overcome, but these do not douse our hope, and it is this hope that enables us to realize that, despite all the difficulties, the project is in itself a victorious one. The interpretative reaches of the Morals of Dialogue are real and show that many Brasilian and Latin American authors have drunk from this well to elaborate morals which are interpellated by the situations experienced in the Third Word, which demande especially a fruitful dialogue on behalf of the solidarity which garantees the dignity of all human life.