This paper gives an account of the author's attempts to come to terms with the concept of internal object relations, and to find an appropriate theoretical place for it within non-Kleinian mainstream theory. It is proposed that the internal object be regarded as a structure in the nonexperiential realm, being built up during development on the basis of the child's subjective perceptual and fantasy experiences. The internal objects in turn influence perception, thought, fantasy, current object relations, and transference. From the point of view of the clinician, the concepts of internal object and of internal object relation act as useful organizing constructs for both analyst and patient. Finally, the suggestion is made that internal objects can be regarded as the source of internal "presences" with which the person constantly unconsciously interacts.