At this point, then, a junction is effected between the previously developed train of thought on countervailing passions and the doctrine of interest. Both doctrines originated in Machiavelli; yet the final outcome—the promotion of avarice to the position of the privileged passion given the job of taming the wild ones and of making in this fashion a crucial contribution to statecraft—would have greatly surprised and outraged him.

The Passions and the Interests (1977) Part I. "How the Interests were Called Upon to Counteract the Passions".