Bourdier cites three pessimistic landmarks in the evolution of Freud's concept of analysis: 1, the denial of sexual pleasure through the mechanism of drive renunciation and identification; 2, the enunciation of the aggressive drive; and 3, the view that in the face of castration anxiety sexual satisfaction

can be obtained only by dispensing with reality testing. The author feels that Freud, in part of his work, may be seen to have explicitly sanctioned perversion and the satisfaction of the partial instincts.