On the other hand, there is a trait of Rigorism in Kant, a survival of the ancient dualism, which was not altogether consistent with the implications of his own philosophy.
"Edward Caldwell Moore Outline of the History of Christian Thought Since Kant"
Edward Moore
For the Christian there were two courses open-both excesses, yet either almost unavoidable: on the one side, a terrible Rigorism, making life unsupportable, next to impossible; on the other, a laxity of thought and action leading to lukewarmness and sometimes apostasy.
"Irish Race in the Past and the Present"
Aug. J. Thebaud
Whosoever nowadays walks the grass-grown paths of Rigorism is a doomed man.
"The Progressionists, and Angela."
Conrad von Bolanden