Rosenfeld played a leading part in the work of Kleinians on the destructive aspects of narcissism [REF].
The concept of what Rosenfeld termed "narcissistic omnipotent object relations"[REF] - a state of mind dominated by an internal object merging ego and ego ideal in a form of mad omnipotence - was later to feed into Kernberg's notion of the pathologically grandiose self[REF] .