This one is simple, yet true. That's what makes it so effective. Anyone can understand it, even the type of person who this image is about. We're talking about greed, folks. Specifically with money. Some people have so much money that I can't fathom why they would want more. It's not like the Earth has infinite resources. You can't be so rich that you can buy unlimited pants. At some point, we'll run out of pants. I hope that makes sense to you, because it makes sense to me.
People who continually chase money look exactly like this. They have nowhere else to put it after a while. They're just jamming it down their throat further and further until they become a bloated monster. Just a shadow of the kind soul they once were. If there's one rule to remember it's that money changes you.