The Cloud upon the Sanctuary

Karl von Eckhartshausen's "The Cloud Upon the Sanctuary" is a series of letters outlining a mystical Christian path to spiritual enlightenment. The central argument posits that the contemporary era, celebrated as an "age of light," is in fact an "age of twilight," dominated by an idolatry of the intellect and a reliance on sense-based "natural reason" which can only perceive phenomena, not absolute truth. This has led to spiritual decay, egotism, and widespread human suffering.