5 How then is the world evil, and He good by whom the world was made? How? “Since the world was made by Him, and the world knew Him not.” The world was made by Him, the heaven and earth and all things that are in them: “the world knew Him not,” the lovers of the world; the lovers of the world and the despisers of God; this “world knew Him not.” So then the world is evil, because they are evil who prefer the world to God. And He is good who made the world, the heaven, and earth, and sea, and themselves who love the world. For this only, that they love the world and do not love God, He made not in them. But themselves, all that appertains to their nature He made; what appertains to guiltiness, He made not. This is that I said a little while ago, “Let man efface what he has made, and so will he be well-pleasing to Him who made Him.”
Source: Sermons on Selected Lessons of the New Testament (New Advent)