In moments of spiritual crisis we naturally fall back upon what worked for us, or seemed to work, heretofore. Sometimes this shows up through the reassertion of our old values in belligerent, testy ways. Regression of any kind is just such a return to old presumptions, often after they have been shown to be insufficient for the complexity of larger questions. The virtue of the old presumptions is that they once worked, or seemed to work, and therein lies if not certainty, then nostalgia for a previous, presumptive security. In our private lives, we frequently fall back upon our old roles.