" This is precisely the anxiety that Weber writes about in The Protestant Ethic and the Spirit of Capitalism. Protestantism, he argued, introduced into Western culture a new, obsessive doubt about the status of one’s salvation. Those who cannot know whether or not they are chosen will do everything in their power to act as though they are, if only to ease their mind. They will go above and beyond what is required, in fact, because no assurance will ever convince them that their efforts have paid off. This doubt spurred a remarkable energy—the “Protestant work ethic,” a spirit of industriousness and self-regulation that created the necessary conditions for the rise of capitalism. "

― Meghan O'Gieblyn , God, Human, Animal, Machine: Technology, Metaphor, and the Search for Meaning