"The Ecumenical Councils of Trent and Vatican I defined that when all of the Fathers of the Church agree on any interpretation of Scripture that pertains to a doctrine of faith or morals, that interpretation is definitive and must be believed. The quotations cited in this document demonstrate that the Fathers of the Church were unanimous in teaching the fiat creation of all things by God; the creation of the entire material universe in six natural days or an instant; and the radical distinction between the work of creation and the natural order of providence, which only began after the work of creation was finished. In light of the solemn teaching of Trent and Vatican I, these quotations suffice to demonstrate that theistic evolution—the evolution by God of all of the different kinds of corporeal creatures over great ages of time by the same kinds of material processes occurring today—is impossible to reconcile with the unanimous teaching of the Fathers." -- Kolbe Center for the Study of Creation