Since the symbolic dimension is the only dimension that cures, "The symbolic order is simultaneously non-being and insisting to be, that is what Freud has in mind when he talks about the death instinct as being what is most fundamental: a symbolic order in travail, in the process of coming, insisting in being realized." The "Schema L", systematized in "La lettre volée" ("Écrits", 1966), is elaborated in this seminar. A four-term structure maps the Real, the Imaginary and the Symbolic as replacing the second Freudian topography: ego/"id"/superego. Two diagonals intersect, while the imaginary rapport links "a" (the ego) to "a"' (the other), the line going from "S" (the subject, the Freudian "id") to "A" (the Other) is interrupted by the first one. The Other is difficult to define: it is the place of language where subjectivity is constituted; it is the place of primal speech linked to the Father; it is the place of the absolute Other, the mother in the demand. The Other makes the subject without the subject knowing it. With Lacan in Freud's "Wo Es war, soll Ich werden", "Es" is the subject. "It" knows him or doesn't. The further, more exacting insight, is "It" speaks or doesn't. At the end of analysis, it is "It" who must be called on to speak, and to enter in relation with real Others. Where S was, there the "Ich" should be.