Thomas Martin Lindsay, 1911 Encyclopædia Britannica, Volume 17… (1911)
“ He had found that all his opponents had pursued one line of argument: the power to issue an Indulgence is simply one case of the universal papal jurisdiction; Indulgences are what the pope proclaims them to be, and to attack them is to attack the power of the pope; the pope represents the Roman church, which is actually the universal church, and to oppose the pope is to defy the whole church of Christ; whoever attacks such a long-established system as that of Indulgences is a heretic. ”
