This interdisciplinary endeavour portrays the central features of militant movements which hold totality as an important part of their doctrinal core. Revisiting the importance of modernity, utopianism, eschatology, charisma, psychology and the history of ideas, Mihai Murariu pursues a reconstruction of the historical requirements for the emergence of such movements. Making a central use of the concept of totalism, the work establishes a conceptual bridge from antiquity to the contemporary period, whilst also arguing for the suitability of the term in comparison to totalitarianism or political religion. The author also proposes a distinct taxonomy for structural elements, variants, and development phases which may be encountered in totalist movements.