Hippolytus of Rome

The expression "rock," he says, he uses of Adam. This, he affirms, is Adam: "The chief corner-stone become the head of the corner. For that in the head the substance is the formative brain from which the entire family is fashioned." "Whom," he says, "I place as a rock at the foundations of Zion." Allegorizing, he says, he speaks of the creation of the man.