Freud was in contact with psychiatrists in the course of his work, even though he was not himself a psychiatrist. The correspondence with Jung gives us some information on the history of this relationship to psychiatry. Unfortunately, the correspondence with Bleuler is still kept from publication, but we can follow some of the history. Bleuler, though a frequent critic of Freud, defended psychoanalytic concepts when speaking with other psychiatrists. With the publication of the Schreber case, the divergences between Jung, Bleuler, and Freud became