Motion emerges only for the For-itself as the temporal constitution of space

Evidence

Motion is the upsurge of the exteriority of indifference at the very heart of the in-itself. This pure vacillation of being is a contingent venture of being. The For-itself can apprehend it only across the temporal ekstasis and in an ekstatic permanent identification of the moving body with itself. This identification does not suppose any operation and in particular no “synthesis of recognition;” for the For-itself it is only the unity of ekstatic being of the Past with the Present. Thus the temporal identification of the moving body with itself across the constant positing of its own exteriority causes the trajectory to reveal itself—that is, to cause space to arise in the form of an evanescent becoming. By motion space is engendered in time; motion extends the line as traced from externality to self. — Jean-Paul Sartre, Being and Nothingness, 643

Categorization

• DEFINE: Defines motion/trajectory as the substantiated nothing that constitutes exteriority-to-self — a core ontological term in the system.
• XREF: Connects to Bergson’s durée and to the temporality axis of Beauvoir — how a moving body’s synthetic unity is constituted via past-present ekstasis. — connects to: Space adds nothing to being but is continuously spatialized through the For-itself’s ekstatic temporalization — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 590; Motion resists ontological derivation and must be accepted as a contingent fact; Motion cannot be understood while preserving the in-itself’s static identity — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 640 (+5 more)

Broader Connections

• Motion alone makes the present dimension of universal time apprehensible #expands (0.85)
• Temporality is the necessary horizon for the for-itself’s transcendence #corroborates (0.78)
• Time is not identical to itself but differentiates and temporalizes itself #expands (0.72) — Catherine Malabou, The Future of Hegel, 254