Bold words to a materialistic culture. And he's right. How many people with lots of stuff do you know who are truly happy?
Me neither. I've been with people who have lots of stuff when a severe storm was approaching. They immediately were worried about all their stuff. "What happens if a tornado really does happen and takes my stuff?! I won't have anything! Help! I'm worried! But don't talk to me about God!"
That's a joyful life? Hardly! I could (and did) just sit back and enjoy the storm. It really was a wonderful storm, too! Lots of rain and wind and lightning. Great fun. And they missed that part of it because of "stuff"! How sad.