  Other authors assign Leibniz a key role in the development of modern logic. Eric J. Aiton, e.g., wrote that the Leibnizian project of a universal characteristic and the logical calculi resulting from it, “played a significant role in the history of logic” (1985, ix). Franz Schupp, starting from Couturat’s evaluation quoted earlier, assumed “that the Leibnizian logic might be relevant for the further development of modern logic, beyond the historically interesting aspect of an ‘ingenious anticipation’” (Schupp 1988, 42). Schupp wrote that every step in the development of modern logic led to new insights into the Leibnizian logic, but sometimes dealing with Leibniz influenced the development itself.