In his “Dante as a Religious Teacher” Dr. Edward Moore makes the following significant remarks with regard to Dante's teaching on the subject of Purgatory: “Dante's conception of the nature and purpose of the pains of Purgatory stands in very marked contrast to the popular ideas of the Middle Ages, and not only to the popular ideas, but also to the teaching and practice of the Roman Church both then and in later times… This difference of attitude on the part of Dante applies not only to the general conception of Purgatory itself, but still more strikingly to the practical consequences flowing from it, in teaching respecting indulgences, transference of merits, and means of remission of, or escape from, Purgatorial penalties.” However, the eminent Dantist minimizes the significance of this difference of attitude and applies to it what he said in a preceding page concerning Dante's conception of the relation of Church and State, namely, that “it may be held to be contumacious, but scarcely heretical, to criticize and oppose what has been authoritatively declared to be essential as a practical condition for the exercise of the Church's mission.”