7 And yet, God gave each of us an intellect capable of attaining natural truth. If we adhere to this truth, we adhere to God Himself, the author of truth, the lawgiver and ruler of our lives. But if we reject this truth, whether out of foolishness, neglect, or malice, we turn our backs on the highest good itself and on the very norm for right living.
Source: Ad Petri Cathedram (Vatican.va)