There are a number of times in the Old Testament when God condemns Israel for their sins. And he says, “Because of your sins, the land is defiled.” 

In Hosea 4:1-3, we read, “Hear the word of the Lord, you Israelites, because the Lord has a charge to bring against you who live in the land: ‘There is no faithfulness, no love, no acknowledgment of God in the land. There is only cursing, lying and murder, stealing and adultery; they break all bounds, and bloodshed follows bloodshed. Because of this the land mourns, and all who live in it waste away; the beasts of the field and the birds of the air and the fish of the sea are dying.'”
What we focus our attention on matters… immensely. We give agency to the things we are most attentive to. These things gain a place of primacy in our minds and hearts. Eventually they shape our worldview and our character. By extension, our worldview and character impact our relationships with others, with our environment, and of course with God.

When we focus on toxic things, anger and bitterness and revenge and jealousy and all of these things, that has a negative impact on our hearts, on our families, on our communities, and on the world itself. So we need to focus on life-giving things. When Dostoevsky said that “beauty will save the world,” this is what he was talking about.

If we want to make the world a better place, we can start by paying attention to what St. Paul says in Philippians 4: whatever is good, whatever is holy, whatever is honorable, whatever is true, he says, “Meditate upon these things.” Pay attention to these things.