For these we have to turn to a letter he wrote to his confidant Wilhelm Fliess dated 21 September 1897 .
Freud did not publish the reasons that led to his abandoning the seduction theory in 1897 -- 1898 .
For these we have to turn to a letter Freud wrote to Freud 's confidant Wilhelm Fliess dated 21 September 1897 .
Freud did not publish the reasons that led to his abandoning the seduction theory in 1897 -- 1898 .