"The simple exchange of apples and oranges between two traders--this institutional model is the starting point for all that I have done," writes Buchanan. "Contrast this with the choice between apples and oranges in the utility-maximizing calculus of Robinson Crusoe. This is] what most economists do." James M. Buchanan has always seemed an outsider--to establishment America, to the political values of modern academia, and to the orthodoxies...