Many members of the Church continued to believe that the pope, as the successor of
Saint Peter, retained the supreme governing authority in the Church.
Juan de Torquemada defended papal supremacy in his
Summa de ecclesia, completed ca. 1453. A generation later,
Thomas Cajetan vigorously defended papal authority in his
On the comparison of the authority of pope and council. He wrote that "Peter alone had the
vicariate of Jesus Christ and only he received the power of jurisdiction immediately from Christ in an ordinary way, so that the others (the Apostles) were to receive it from him in the ordinary course of the law and were subject to him," and that "Christ gave the plenitude of ecclesiastical power not to the community of the Church but to a single person in it."
Pope Pius II was a major opponent of conciliarism. According to
Michael de la Bédoyère, "Pius II [...] [insisted] that the doctrine holding General Councils of the Church to be superior to the Pope was
heretical." Pius II's bull
Execrabilis condemned conciliarism.
Pope Pius VII condemned the conciliarist writings of
Germanos Adam on June 3, 1816. == Modern conciliarism ==