Both the intrapsychic and the intersubjective take part in the analytic pro
cess. A pointless struggle for supremacy may await those who support either
point of view exclusively. If the "objectal" perspective is well known, th
e "subjectal" one is less theoretically defined: it includes the series of
the ego, the self; the subject, the I, etc. The drive is the matrix of the
subject. An examination of the relationships between perception and represe
ntation raises the question of the connections between drive and object. Th
e object is the revealer of the drive. A revision of Freud's theory must un
derline the role of the object, which is unduly neglected. The new paradigm
should consider the indissociable couple, drive-object. The construction o
f the object leads retroactively to the hypothesis of the drive which recip
rocally constructs the object. The function of the similar other (autre sem
blable) is defined as a fundamental link (desire and identification). The i
ntersubjective relationship connects two intra psychic subjects. Force and
meaning are intertwined and combine their effects. Psychic causality is at
the crossroads of the biological (metabiological) and the cultural. This pa
per examines the transition from the first topographic model to the second.