The book revolves around the beliefs and ideals of Christian religion. The theology is so eloquently described that it influences and shapes the thoughts of readers.
St. Athanasius, St. Augustine, St. Benedict, Dante Alighieri, Anonymous, Julian of Norwich, Thomas à Kempis, John Calvin, St. Teresa of Avila, St. John of the Cross, Blaise Pascal, John Bunyan, Brother Lawrence, William Law, Fyodor Dostoyevsky, G. K. Chesterton, Gerard Manley Hopkins, Henry Scougal, Jonathan Edwards, A. W. Tozer, Gilbert Keith Chesterton, Saint Augustine, Saint Benedict, Saint Teresa of Avila, Saint John of the Cross, A.W. Tozer & Saint Athanasius
Henry Rider Haggard, Gilbert Keith Chesterton, John Buchan, William Le Queux, Frank Norris, Anthony Hope, Erskine Childers, Allen Upward, Fred Merrick White, Grant Allen, Edward Phillips Oppenheim, William Andrew Johnston, Marcel Allain, Edgar Wallace, Thomas Hardy, Mary Roberts Rinehart, Edgar Rice Burroughs, Wilkie Collins, Arthur Griffiths, AtoZ Classics, Frederic Arnold Kummer & Louis Joseph Vance
Gilbert Keith Chesterton, Gaston Leroux, Maurice Leblanc, William Le Queux, Carolyn Wells, Hanns Heinz Ewers, Ryūnosuke Akutagawa, Hollis Godfrey, Frank R. Stockton, Fred Merrick White, Mark Twain, Jules Verne, Thomas Hardy, Edgar Allan Poe, Arthur Conan Doyle, Wilkie Collins, AtoZ Classics & Catherine Louisa Pirkis
Sinclair Lewis, P. G. Wodehouse, Oscar Wilde, H.G. Wells, Mark Twain, Frank R. Stockton, Jerome Klapka Jerome, Lewis Carroll, Gilbert Keith Chesterton, John Kendrick Bangs, Golden Deer Classics, Jane Austen, Edwin Abbott Abbott, Aldous Huxley & Natsume Sōseki
Thomas More, Marcus Aurelius Antoninus, Sun Tzu, Vātsyāyana, Voltaire, Edwin A. Abbott, Aristotle, Dale Carnegie, Gilbert Keith Chesterton, René Descartes, Epictetus, Sigmund Freud, Hermann Hesse, David Hume, Lao Tzu, D. H. Lawrence, Niccolò Machiavelli, John Mill, Prentice Mulford, Friedrich Nietzsche, Plato, Bertrand Russell, H.G. Wells & Frances Bacon
Mark Twain, Agatha Christie, Arthur Conan Doyle, Edgar Allan Poe, Dorothy Leigh Sayers, G.K. Chesterton, Charles Dickens, Jules Verne, Wilkie Collins, Joseph Smith Fletcher, R. Austin Freeman, Maurice Leblanc, Sax Rohmer, Golden Deer Classics, Marcel Allain, Gilbert Keith Chesterton, John Meade Falkner, Émile Gaboriau, Thomas W. Hanshew, Ernest William Hornung, Herbert George Jenkins, Joseph Sheridan Le Fanu, William Le Queux, Harold MacGrath, George Barr McCutcheon, John T. McIntyre, Arthur Morrison, Edward Phillips Oppenheim, Allan Pinkerton, Melville Davisson Post, Arthur John Rees, Mary Roberts Rinehart, Harrington Strong, Louis Tracy, Louis Joseph Vance, Carolyn Wells, Herman Whitaker, George F. Worts & Israel Zangwill
