Frank, Robert, Passions Within Reason

Frank, Robert, Choosing the Right Pond

Hazlitt, Henry, The Foundations of Morality

Knight, Frank, The Ethics of Competition

Landsburg, Steven, Fair Play

This is an extremely creative set of applications of economics to everyday life. Particularly interesting is his discussion of population growth in Chapter 13 and discussions throughout the book on the power of human ingenuity.

McCloskey, Deirdre, The Vices of Economists, the Virtues of the Bourgeoisie

Sen, Amartya, On Ethics and Economics

Smith, Adam, The Theory of Moral Sentiments

Stigler, George, The Economist as Preacher and Other Essays