As a result of the fall, many brilliant humans have become profane. Nevertheless, Calvin insists: "In reading profane authors, the admirable light of truth displayed in them should remind us that the human mind, however much fallen and perverted from its original integrity, is still adorned and invested with admirable gifts from its Creator. If we reflect that the Spirit of God is the only fountain of truth – we will be careful, as we would avoid offering insult to Him, not to reject or condemn truth wherever it appears. In despising the gifts, we insult the Giver!"49 This is so, because Christ through His Spirit still operates upon all men – either savingly or unsavingly. Indeed, He started so acting right after the fall. That is why even the wicked offspring of the wicked Cain were enabled to develop architecture and cattle-ranching and music and metallurgy and poetry. Genesis 4:17-24.