This book is from C. S. Lewis's "The Screwtape Letters," a satirical novel presented as a series of letters from a senior demon, Screwtape, to his nephew, Wormwood, a junior tempter. The novel offers diabolical advice on how to corrupt a human "patient" and lead him away from Christian faith. Screwtape instructs Wormwood on various strategies, including exploiting human vulnerabilities like pride, fear, and desire for novelty, undermining genuine prayer and humility, and manipulating societal concepts like "democracy" to serve infernal ends. The novel also includes introductory and concluding remarks from the publisher and notes about other works by Lewis.