But the evils which the church encouraged were more dangerous than the vices of its members. These evils were inherent in the papal system, and were hard to be subverted. There were corruptions of doctrine, and corruptions in the government and customs of the church.

There generally prevailed, throughout Christendom, the belief in papal infallibility, which notion subverted the doctrines of the Bible, and placed its truths, at least, on a level with the authority of the schoolmen. It favored the various usurpations of the popes, and strengthened the bonds of spiritual despotism.

A Modern History, From the Time of Luther to the Fall of Napoleon — Part 11

The popes also claimed a control over secular princes, as well as the supremacy of the church. Hildebrand was content with riveting the chains of universal spiritual authority, the evil and absurdity of which cannot well be exaggerated; but his more ambitious successors sought to reduce the kings of the earth to perfect vassalage, and, when in danger of having their monstrous usurpations torn from them, were ready to fill the world with discord and war.

A Modern History, From the Time of Luther to the Fall of Napoleon — Part 11

But the worldly popes of the fifteenth century also aspired to be temporal princes. They established the most elegant court in Europe; they supported large armies; they sought to restore the splendor of imperial Rome; they became ambitious of founding great families; they enriched their nephews and relations at the sacrifice of the best interests of their church; they affected great state and dignity; they built gorgeous palaces; they ornamented their capital with pictures and statues.

A Modern History, From the Time of Luther to the Fall of Napoleon — Part 11

The territories of Rome were, however, small. The lawful revenues of the popes were insufficient to gratify their extravagance and pomp. But money, nevertheless, they must have. In order to raise it, they resorted to extortion and corruption. They imposed taxes on Christendom, direct and indirect. These were felt as an intolerable burden; but such was the superstition of the times, that they were successfully raised. But even these were insufficient to gratify papal avarice and rapacity. They then resorted, in their necessities, to the meanest acts, imposed on the simplicity of their subjects, and finally adopted the most infamous custom which ever disgraced the world.