Radical Protestants have always been concerned for the inwardly authentic quality of personal experience and commitment. From this perspective one judges the run-of-the-mill piety which is satisfied with conformity to easily attained patterns of expression. This critical perspective on hypocrisy and superficiality presupposes a more authentic alternative, which is very difficult to define. Once it is clearly defined, that new, more authentic form becomes inauthentic in its turn; yet that kind of preoccupation always belongs as part of the radical Protestant vision. The "civil religion" is judged for being feasible; its demands are too attainable.

p. 175 - The Priestly Kingdom (1984)