He was a member of the council of Basel, and dedicated to the assembled fathers a work entitled De concordantia Catholica, in which he maintained the superiority of councils over popes, and assailed the genuineness of the False Decretals and the Donation of Constantine.
Pippins donation was restored, but the protectorate was no longer so distant, respectful and intermittent as the pope liked.
The donations of Pippin and Charlemagne established him as sovereign de facto; the donation of Constantine was to proclaim him as sovereign de jure.
It is folly to speak of a donation of lands which did not belong to the pope, or to maintain that the freedom of the Americans was extinguished by the decision of Alexander VI.
Bonneau, La Donation de Constantin (Lisieux, 1879).
It was the interest of the Porte to change the princes as often as possible, as the accession donation thus became due more frequently.
Valla by one vigorous effort destroyed the False Decretals and exposed the Donation of Constantine to ridicule, paving the way for the polemic carried on against the dubious pretensions of the papal throne by scholars of the Reformation.
The same year saw him at Venice, making a donation of his library to the republic of St Mark.
His friends and admirers were distributed over all the countries of Europe, and presents were continually arriving from small as well as great, from a donation of 200 florins, made by Pope Clement VII., down to sweetmeats and comfits contributed by the nuns of Cologne 666).
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