“But when things are in their proper places, and the order of nature is preserved, to the pure all things are pure; but to the impure and unbelieving, among whom you stand first, nothing is pure. You might make a wholesome application to yourselves of the following words of the apostle, if you desired a cure for your seared consciences. The words are: ‘Their very mind and conscience are defiled.’”   St. Augustine, Contra Faustum, Bk. XXXI