Catholic saints are holy people and human people who lived extraordinary lives. Each saint the Church honours responded to God's invitation to use his or her unique gifts. God calls each one of us to be a saint.
Historical research made Newman suspect that the Roman Catholic Church was in closest continuity with the Church that Jesus established. In 1845, he was received into full communion as a Catholic. Two years later he was ordained a Catholic priest in
Newman eventually wrote 40 books and 21,000 letters that survive. Most famous are his book-length Essay on the Development of Christian Doctrine, On Consulting the Faithful in Matters of Doctrine, Apologia Pro Vita Sua (his spiritual autobiography up to 1864) and Essay on the Grammar of Assent.