Is it possible for a human being to act in a truly disinterested manner? Do disinterested actions have a psychological unity or are they the mere product of circumstances? Is disinterestedness an individual or a collective phenomenon? These are the questions that Jon Elster tackles in the first volume of a trilogy dedicated to a thorough critique of classical conceptions of Homo Economicus. But, asks reviewer Gloria Origgi in light of Elster’s taxonomy of forms of disinterestedness, if so many different motivations may underlie the phenomenon of disinterestedness, are we still talking about one and the same thing?