"I had a conversation with John Spivak, the Communist writer, a few years ago, and he said to me, "How can you believe? How can you believe in the Immaculate Conception, in the Virgin birth, in the Resurrection?" I could only say that I believe in the Roman Catholic Church and all she teaches. I have accepted Her authority with my whole heart. At the same time I want to point out to you that we are taught to pray for final perseverance. We are taught that faith is a gift, and sometimes I wonder why some have it and some do not. I feel my own unworthiness and can never be grateful enough to God for His gift of faith. St. Paul tells us that if we do not correspond to the graces we receive, they will be withdrawn. So I believe also that we should walk in fear, "work out our salvation in fear and trembling.""