Pope Francis said “This book has done me so much good”. The book Mercy by Walter Kasper published by Mahwah, NJ. 2013. I wanted to read it in order to see why he said this. When Francis talks about mercy he means steadfast love. He doesn’t mean the pity extended by a superior being for someone they could crush if they wanted to which is often the “west’s” use of the word. Kasper over and over quotes the bible and always it is this concept of steadfast love. This love, loves, because it can only love. In that love the beloved comes to experience their being while at the same time discovering everyone else to be also loved in this same way. The subtitle of the book is “the essence of the Gospel and the key to Christian Life. I can say with Francis, “this book has done me so much good”.