This volume investigates the conceptual evolution and socio-political implications of the 'devil' as a metaphor within the framework of modern philosophical discourse. Ernest Gellner, a renowned social anthropologist and philosopher, utilizes his expertise in the sociology of knowledge to examine how Enlightenment and post-Enlightenment thinkers grappled with the problem of evil and irrationality. He argues that the shifting definitions of the 'devil' reflect broader transitions in Western intellectual history, moving from theological constructs to secularized critiques of power and human nature.

Scholars frequently cite Gellner’s work for its rigorous interdisciplinary approach, blending anthropological insight with philosophical inquiry. Experts note that the text provides a dense, challenging analysis that is best suited for readers familiar with the history of Western thought.