The three major elements of this fascinating correspondence are: the way in which the relationship between the two men evolves, as Ferenczi moves from awestruck young stranger to valued colleague and friend, and from disciple to bold innovator; the account it gives of the first great schism in psychoanalysis, as first Adler and then Jung break with Freud; and the light it throws on Ferenczi's preoccupation with boundaries. These processes themselves are suddenly and terribly interrupted: the final letter opens with Freud mentioning the assassination in Sarajevo of the Archduke