DR. CROWLEY'S STIMULATING paper focuses on the relation of several of Sullivan's conceptions to the development of a science of man. I will here limit myself to a discussion of two of these conceptions without immediate reference to their relevance to a science of man.

Dr. Crowley has fulfilled a much-needed service in elaborating on what is meant by interpersonal relations. Although Sullivan's theoretical thrust was to break through the notion of an encapsulated psyche driven by its own finite energies, he also made clear that he was not only concerned about events occurring outside the process of "mentation" characterizing a given individual. So it is that "interpersonal relations" is a most complex conception which, at one level of abstraction, can refer to observable behavioral interactions between individuals while, at another level, it refers to "intrapsychic" symbolic representations of interpersonal events.