Sentence:  Abstract symbol systems, such as mathematics, are especially valuable for object-seeking for <WSD>schizoid</WSD> personalities. By means of such symbolizations, object contact may be sought and obtained, while at the same time a psychological distance may be maintained between self and other; it is virtually impossible to have a personal relationship and at the same time to maintain such distance. 
Meaning of the word marked with <WSD> tags:  characterized by social withdrawal and emotional coldness or flattened affectivity