Now just as we pick out and exaggerate the pleasure of eating to produce gluttony, so we pick out this natural pleasantness of change and twist it into a demand for absolute novelty. This demand is entirely our workmanship. If we neglect our duty, men will be not only contented but transported by the mixed novelty and familiarity of snowdrops this January, sunrise this morning, plum pudding this Christmas. Children, until we have taught them better, will be perfectly happy with a seasonal round of games in which conkers succeed hopscotch as regularly as autumn follows summer. Only by our incessant efforts is the demand for infinite, or unrhythmical, change kept up.”
C. S. Lewis wrote the Screwtape Letters from the point of view of a senior-level demon named Screwtape providing instructions to his direct-reports (ie, demons doing actual work) on how to be great demons. The quote above is a wonderful glimpse into just how visionary Screwtape really is.