"Narcissist: psychoanalytic term for the person who loves himself more than his analyst; considered to be the manifestation of a dire mental disease whose successful treatment depends on the patient learning to love the analyst more and himself less"

This quote by Thomas Szasz is describing the psychological term "narcissist". A narcissist is somebody who loves themselves more than anybody else, including their analyst. This is seen as a sign of a serious mental disorder, and the only method to treat it is for the client to find out to like their expert more than themselves. This quote is stressing the value of the client's relationship with their analyst in order for them to be able to conquer their mental illness. It is likewise highlighting the requirement for the client to learn to love themselves less in order to have the ability to move on in their treatment. This quote is a suggestion that the client's relationship with their expert is essential in order for them to be able to make progress in their treatment.