”Happiness is political,” is the opening line of Kaswan’s provocative book on William Thompson’s theory on the social nature of happiness and its ramification for organizing a just society. Kaswan introduces the reader to Thompson (1775-1833) as “perhaps the paradigmatic case of a traitor to his class.” Thompson was the only son of a wealthy merchant in Cork, Ireland; however as a political theorist, he developed ideas of the Enlightenment in a liberatory direction, calling for the elimination of subordination in all its manifestations.