Common Wealth, Common Good is a study of the political discourse of the Commonwealth of Poland-Lithuania in the late seventeenth and early eighteenth centuries. It argues that the Polish-Lithuanian political tradition was preoccupied during this period with moral concepts, in particular that of public virtue, understood as the subordination of private interests to the common good. Polish-Lithuanian politicians and commentators analysed their politics primarily in moral terms, arguing that the Commonwealth existed for the promotion of virtue, and depended for its survival upon on the retention of virtue among rulers and citizens. They analysed the acute political dysfunction that the Commonwealth experienced from the late seventeenth century as the result of corruption in the body politic. Proposals for reform of the Commonwealth's government aimed at reversing this corruption and restoring virtuous government in the service of the common good.