This text introduces the concept of a "new dualism" that radically departs from the traditional symmetrical conception of two substances. Moving away from the Cartesian model, the author proposes an asymmetrical relationship based on the distinction between the interior and the exterior. A key figure in this thinking is Leibniz, whose emphasis on interiority serves as a basis for overcoming the limiting parallelism of Spinoza or Hegel. New dualism rejects the neutrality of both components, emphasizing the interior as the active origin of all events. Crucially, this interiority is not to be confused with mere subjectivity; it is understood as a sphere inseparably linked to the incoming future. The processual nature of being lies in activity that responds to the challenges of the "not-yet," transforming it into an emerging reality. The resulting past is viewed not as raw matter, but as significant relics that retain importance for further development. The text emphasizes the need to interpret philosophical history as a progressive movement toward understanding interiority as the source of true change.