During the second half of the last century famous analytic philosophers convincingly argued for a contemporary re-thinking of the works of philosophers from the seventeenth and eighteenth century. John Mackie (1976) considered Problems from Locke, Wilfrid Sellars (1967) wrote Variations on Kantian Themes (book subtitle), and in Individuals Peter Strawson followed, "with a certain qualification' (1959: 117), Leibniz's system of monads. In addition, whereas this allegiance to Leibniz refers to aspects of concrete content, Strawson's methodological recourse is to Kant.