The Secret Teachings of All Ages by Manly Palmer Hall
“Though the demonism of the Middle Ages seems to have disappeared, there is abundant evidence that in many forms of modern thought—especially the so-called ‘prosperity’ psychology, ‘will-power-building’ metaphysics, and systems of ‘high-pressure’ salesmanship—black magic has merely passed through a metamorphosis, and although its name be changed its nature remains the same.”
—Manly Palmer Hall, 1928