Aggressiveness

In Seminar VIII, Lacan deploys the concept of aggressiveness to name the structural antagonism that belongs irreducibly to the imaginary register—specifically to the dual, mirror-bound relationship between the subject and its semblable. Aggressiveness is not merely a contingent psychological hostility but the necessary underside of narcissistic identification: because the ego is constituted by taking an outside image as its own (the ideal ego, i(a)), any other subject who inhabits a similar image is experienced as a radical threat, a figure who "steals" the subject from itself. The relation is therefore locked in an either/or—either I annihilate the other or I am annihilated—because the imaginary register admits no triangulation, no symbolic third that could mediate difference. This is the dimension Lacan inherits from the Hegelian Master–Slave dialectic and from the mirror stage, but which he insists cannot be resolved at the imaginary level alone.

The theoretical move of Seminar VIII is to show that aggressiveness marks precisely the limit of what the dyadic imaginary can do—and thereby to establish the necessity of the big Other (the symbolic register, capital-O Other) as the term that exceeds and re-orients the murderous dual. The intervention of the Other grounds the ego ideal (I(A)) above and beyond the ideal ego, inserting a symbolic point from which the subject can see itself as seen without the zero-sum logic of the mirror. Aggressiveness thus functions as both a clinical datum and a structural indicator: wherever it erupts in full force, it signals that the symbolic order has failed to take hold, that identification has remained stuck at the specular-imaginary level, and that the death-drive–inflected compulsion of the imaginary mirror has not been symbolically mortified.

This concept appears in jacques-lacan-seminar-8 (p. 365) as part of Lacan's account of narcissistic development via the optical schema. It sits at the intersection of several canonical formations. Its most immediate anchor is the Ideal Ego: aggressiveness is the affective-structural consequence of imaginary identification, the hostility that the ideal ego (i(a)) generates toward any semblable who mirrors and thereby threatens it. The concept also indexes the necessity of the Ego Ideal: only the symbolic Other's intervention—placing I(A) beyond the mirror—can break the imaginary deadlock that aggressiveness symptomizes. The relation to Identification is equally central: aggressiveness arises when identification remains at the imaginary/narcissistic pole and never ascends to symbolic identification via the unary trait. With respect to the Master–Slave Dialectic, Lacan implicitly acknowledges Hegel's framing of mortal combat as the origin of self-consciousness, but argues that the Hegelian dialectic (like the Jekels–Bergler model) cannot, by itself, account for the third term—the symbolic Other—that resolves the either/or. The Death Drive hovers in the background: aggressiveness is the imaginary face of the death drive's radical either/or, the form in which the dissolution of the ego is threatened by the specular rival before the symbolic order has mortified it into the subject's productive alienation in the signifier. The Gaze is also implicated: the other's image in the mirror is experienced as a look that judges, steals, and occupies the subject's own place.

Seminar VIII · TransferenceJacques Lacan · 1960 (p.365)

There is a certain dimension of conflict here that has no other solution than that of an either/or. Either he has to tolerate the other as an unbearable image that steals him from himself, or he must immediately break him... The link between this image and aggressiveness is quite clear here.

The phrase "steals him from himself" is theoretically loaded because it encodes the Lacanian thesis that the ego is constitutively alienated in an outside image—so the rival does not merely threaten the subject externally but usurps the very site of the subject's self-recognition; the "either/or" then names the structural absence of any symbolic third, making aggressiveness not a mood but an index of the imaginary's zero-sum logic.