CARDINAL PIE OF POITIERS
In the opening discussions for the Schema de Romano Pontifice, May 13, 1870, Bishop Pie of Poitiers gave a speech that lasted one hour and five minutes. In the course of his speech he gave a phenomenal explanation of the supernatural symbolism in the upside down crucifixion of Saint Peter. An explanation which helps us to understand better the definition of the Vatican Council which tells us the Pope's Infallibility does not come from nor depend on the consent of
The upside down crucifixion is a token of the Infallibility of the Pope, he explains, because Saint Peter was crucified head downwards: As the head bears the whole weight of the body, so the Pope, as head, bears the whole Church.