He is well-known for his book Economics in one lesson, but he also wrote other books, among which a major work on ethics, The Foundations of Morality.
External links
... from 25 to 44, 23.8% from 45 to 64, and 7.9% who are 65 years of age or older. The median age is 35 years. For every 100 females there are 95.1 males. For every 100 ...