Consider stories of the devil using his powers of persuasion to convince hapless people to sign over their souls in exchange for wishes granted. That’s the traditional application of “psychogogic,” which is an adjective from the Greek “psychagōgia,” meaning “persuasion, winning of souls.” However, the word today can be used to describe actions of a persuasive or inspiring nature. “Psychagogy” means “a method of influencing behavior by suggesting desirable goals,” and the adjective form can apply to someone with especially persuasive skills.