Building on work by Weber and Troeltsch, this article examines other-
and inner-worldly asceticism in Waldensianism, one of the largest hete
rodox religious movements in the Middle Ages. To explain variation in
the types and directions of religious conduct, the historical comparat
ive analysis focuses on the interplay of ethics and organization in ea
rly, later, and Austrian Waldensianism. Based on the exploration of la
rgely primary sources, the article argues that asceticism in early and
later Waldensianism was other-worldly and confined to Waldensian itin
erant preachers. In the unique case of the Austrian Waldensians, ascet
icism not only extended to lay congregations, but was also oriented to
ward the secular sphere. For the Austrian Waldensians the world was a
task and had to be mastered through diligent, methodical behavior. The
Austrian Waldensians' rationalized conduct in the secular sphere was
a form of inner-worldly asceticism that preceded ascetic Protestantism
's by more than three centuries.