After studying over 500 years of history, I’ve found there are really only three things you need to do to build a healthy society. First, educate your young people well—not just to be capable, but to be civil. If you have capable, civil people in a productive society, that’s a big part of the battle. Second, the finances must be sound: earn more than you spend and have more assets than liabilities. And third, don’t get into a war—internally or externally. If you can do those three things, you can have a prosperous, self-reinforcing society.