Once again, perhaps the last, to enter into one of the knots of Western philosophy, the Cartesian dualism. Knot that continues to squeeze many of our ways of doing, thinking, looking ... But enter from the side: the epistolary relationship between René Descartes and Elisabeth de Bohemia, who knows its heyday in the five letters exchanged between May and July 1643. Great reader of his treatises, Elisabeth, "Princess Philosopher", insists on asking how the soul moves the body and the body moves the soul if one is immaterial (inextensible) and the other is material (extensive). Cornered by the obstinacy of these questions by moving and feeling, Descartes recognizes the soul "an extension" that opens a gap in the construction of his own philosophy. This new translation presents the fruitful paradoxes of a co-extending immateriality that arise from the epistolary relationship, and a current and situated reading of the uppercut to the dualism launched in those letters; the cracks where some of the dualism escapes, opening the way to a corpus of dancing experiences and pe (n) santes that do not return to the body an "object", but require to think a materialism in co-extension and a pe (n) sar with move. It is committed to give consistency to gestures, gravitational and haptic relationships, voices, images, shouts and concepts that "knock down" the Cartesian dualism, as many possible levers for our situated investigations, our corporeality and transformed relationships, and our current rings.