“All depends on the doctrine. Where doctrine is right, then everything is right: faith, work, love, suffering, good and evil days, eating, drinking, hunger, thirst, sleeping and waking, walking and standing still, etc. Where the doctrine is not right, then it is in vain, all is lost, and everything is completely condemned: work, life, suffering, fasting, prayer, alms, cowls and tonsures, and whatever else belongs to the holiness of the papal church.”
Luther, Martin. “To the Saxon Princes” (1545) Luther’s Works Vol. 42. (Philadelphia: Fortress Press, 1969), page 281.