In C.S. Lewis's "The Screwtape Letters," the author conveys the idea that a religion lacking fervor and depth offers no real benefits, akin to having no religion whatsoever. Such a moderated approach to faith drains spirituality of its significance and purpose, making it merely a source of entertainment rather than an avenue for genuine belief and transformation.
Lewis emphasizes that this kind of diluted religion can be more entertaining, drawing attention to the superficial aspects rather than the profound truths of faith. Ultimately, he suggests that a vibrant, engaging belief system is crucial for meaningful spiritual experience, while a tepid version leads to apathy and a void of seriousness in matters of faith.