Excellent summary of the topic at The American by Arthur Brooks and Peter Wehner.
Perhaps I like it because it confirms my line of thinking, but says it better than I can. They begin:
The model of human nature one embraces will guide and shape everything else, from the economic system one prefers to the political system one supports.
At the core of every social, political, and economic system is a picture of human nature (to paraphrase 20th-century columnist Walter Lippmann). The suppositions we begin with—the ways in which that picture is developed—determine the lives we lead, the institutions we build, and the civilizations we create. They are the foundation stone.
It's one of the biggest topics on earth. Good job, guys.