The Augustinus seu doctrina Sancti Augustini de humanae naturae sanitate, aegritudine, medicina adversus Pelagianos et Massilianses, known as the Augustinus, was a theological work in Latin by Cornelius Jansen. Published posthumously in Louvain in 1640, it was in three parts:
It began with the proposition that Augustine of Hippo was a man chosen by God to reveal the doctrine of grace. Thus, by this logic, any later Catholic teaching contrary to Augustine's work should be revised to match it. The text stoked the theological controversies that raged in France and much of Europe after the spread of Jansenism. Five of the books' propositions were considered heretical and condemned as such by pope Innocent X in his bull Cum occasione issued, May 31st, (1653).[1] In reaction to this condemnation, Blaise Pascal wrote his 17th and 18th Lettres provinciales in 1657.