ABSTRACT This article traces the reception of Hume's ‘Idea of a Perfect Commonwealth’ (1752) among a circle of Scottish Whigs supportive of the French Revolution. While the influence of Hume's essay on American Federalists like James Madison has long been a subject of debate, historians have overlooked the appeal that the plan held for Hume's intellectual heirs in Scotland. In the early 1790s, theorists such as John Millar, James Mackintosh, and Dugald Stewart believed European governments – above all France – (...) could progress in the direction of the ‘Idea of a Perfect Commonwealth’. Hume modelled his plan after The Commonwealth of Oceana (1656) by James Harrington. In so doing, he helped transmit a version of institutional republicanism to a generation of Scottish intellectuals searching for more explicit political reforms. Thinkers like Millar and Stewart interpreted Hume's essay as both a justification for idealist political ‘speculation’ and a ‘practicable’ plan for rebalancing political power in a large commercial state. (shrink)