" Many of the celebrated makers of the modern world have been shown up for their devious handling of truth in some aspect of their thinking or their lives—including Rousseau, Shelley, Marx, Ibsen, Tolstoy, Hemingway, Brecht, Bertrand Russell, Sartre, Margaret Mead and others. Yet these are the men and women of ideas who have risen up to overthrow the guardians of traditional Western society, and who on the basis of the brilliance of their minds are now trusted to diagnose our ills, prescribe our remedies and direct the future for our children and for the world. "

― Os Guinness , Fool's Talk: Recovering the Art of Christian Persuasion