“What the Church is sent apostolically to do is to make saints, i.e., to make humans completely human. This phrase, completely human, is often misused today to mean its exact opposite, to reduce the Church’s supernatural task to a merely natural one. But the Church betrays her mission and her Lord if she lets psychologists and sociologists who do not know Christ as her source dictate her end. We are sent to be completely human as Christ was, to love as he loved, not to be nice, not to “have a nice day”, not to pitch in a little bit to help build what everyone else is building. No, we are sent with a distinctive task: to build an eternal kingdom, a different building. We live in two worlds, and we rightly cooperate in building this one too, but the Church’s raison d’être is not to be one more social service agency but to be the one and only ark of eternal salvation, to be Christ to the world. This includes social service and liberation of the poor. Christ healed some bodies, but as a sign of his essential mission to heal all souls. Christ loved and liberated the poor, but as a sign of his love and liberation of our spiritual poverty. His work in time was a sign of his work for eternity. Even”
― Peter Kreeft, Fundamentals Of The Faith
Kreeft considers all the fundamental elements of Christianity and Catholicism, explaining, defending and showing their relevance to our life and the world's yearnings. Here is a book to help you understand your faith more fully and to explain it to others more winningly.
Like every religion, this faith has three aspects, corresponding to the three parts of the soul and filling the innate needs of all three parts. Kreeft uses these three divisions as the basic outline for his Christian apologetics. First, every religion has some beliefs, whether expressed in creeds or not, something for the intellect to know. Second, every religion has some duty or deed, some practice of program, some moral or ethical code, something for the will to choose. Finally, every religion has some liturgy, some worship, some "church", something for the body and the concrete imagination and the aesthetic sense to work at. Creed, Code and Cult; Words, Works and Worship, are a most useful way of outlining any religious faith, including the Catholic Faith of Christians.