Adam Smith is amazing but I disagree with his self interest/love theory and free markets. Ayn Rand had the same idea and Greenspan used it for monopolistic banking and corporate interest ruining the real markets people need to live their daily lives not just the stock market and the federal banking system (never forget to big to fail, 2008). You can see what self interest does to unregulated free markets on the trending page here on steemit. I do love his views on many things like leave the people alone when governments start getting involved and over regulating human behavior and economies.