Besides speaking of that Church authority which guides the stream of the Christian life of faith in a sure course and protects it from all contamination, we ought also to consider the stream itself. While it would be modernistic and erroneous to attribute the formulation of dogma simply to the religious needs of the community and not to the authoritative teaching of the Church, yet it is certain on the other hand that we should not separate official teaching from the faith of the community. The two things cannot in fact be separated, because the life of faith is nourished by the truths of faith, and the truths of faith are attested in the life. Authority guards the truth, and the community manifests the life, and therefore these two stand in a close reciprocal relation and must not be separated. Not only does Church authority mould the life of the community with the truths of faith, but the life of the community reacts on the authority itself, protects it, and illuminates with ever new radiance the truths which it conveys. It is because of this essential union of truth and life, of authority and community, that when Church authority has sometimes and in some places failed in its trust, the life of the community has been the fresh source whence the life of the Church has been renewed. In fact history testifies that when truth has seemed barren and authority overcome by human frailty, the grace of Christ, its Head, has brought forth from the womb of the living community members who by the power of their faith have given new life, not only to their own immediate environment, but to the whole Church. It is in this that the providential and salutary influence and the historical importance of so many saints are manifest. St. Bernard and St. Francis, St. Catherine of Siena, St. Clement Maria Hofbauer and so many others—what else did they do but bring forth from within themselves “streams of living water”? (cf. Jn. vii, 38); Did not the living ardor of their faith give to wide regions of the Church new growth, new youth, a second spring?