" We may finally summarize the emotional dilemma of the schizoid thus: he feels a deep dread of entering into a real personal relationship, i.e. one into which genuine feeling enters, because, though his need for a love-object is so great, he can only sustain a relationship at a deep emotional level on the basis of infantile and absolute dependence. To the love-hungry schizoid faced internally with an exciting but deserting object all relationships are felt to be 'swallowing-up things' which trap and imprison and destroy. If your hate is destructive you are still free to love because you can find someone else to hate. But if you feel your love is destructive the situation is terrifying. You are always impelled into a relationship by your needs and at once driven out again by the fear either of exhausting your love-object by the demands you want to make or else losing your own individuality by over-dependence and identification. This 'in and out' oscillation is the typical schizoid behaviour, and to escape from it into detachment and loss of feeling is the typical schizoid state.
The schizoid feels faced with utter loss, and the destruction of both ego and object, whether in a relationship or out of it. In a relationship, identification involves loss of the ego, and incorporation involves a hungry devouring and losing of the object. In breaking away to independence, the object is destroyed as you fight a way out to freedom, or lost by separation, and the ego is destroyed or emptied by the loss of the object with whom it is identified. The only real solution is the dissolving of identification and the maturing of the personality, the differentiation of ego and object, and the growth of a capacity for cooperative independence and mutuality, i.e. psychic rebirth and development of a real ego. "

― , Schizoid Phenomena, Object Relations and the Self