The for-itself is defined as an internal negation of the in-itself, bridged through knowledge

Evidence

In Part Two Sartre, using this view of the For-itself as a Nothingness and as an always future project, discusses the For-itself as a pursuit of Being in the form of selfness. This involves the questions of possibility, of value, and of temporality, all of which prove to be integrally related to the basic concept of the For-itself as an internal negation of Being-in-itself. But if the For-itself is a relation to the In-itself, even by way of negation, then we must find some sort of bridge. This bridge is knowledge, the discussion of which concludes Part Two. — Jean-Paul Sartre, Being and Nothingness, 37

Categorization

• DEFINE: Establishes the systematic relation: for-itself as negation, then the knowledge bridge that will give rise to the body and the Other.
• XREF: connects to: The For-itself’s being consists in internal negation rather than self-coincidence — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 445; The for-itself constitutes itself through an original negation of the thing — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 571; The for-itself depends on the in-itself through an internal relation — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 1437 (+7 more)

Broader Connections

• The For-itself’s being consists in internal negation rather than self-coincidence #corroborates (0.95) — Jean-Paul Sartre, Being and Nothingness, 445
• The For-itself is not a substance but the nihilation of a particular In-itself #expands (0.90) — Jean-Paul Sartre, Being and Nothingness, 1432
• The for-itself constitutes itself through an original negation of the thing #expands (0.85) — Jean-Paul Sartre, Being and Nothingness, 571
• The for-itself is defined by self-withdrawal rather than self-identity #corroborates (0.85) — Jean-Paul Sartre, Being and Nothingness, 1145
• The for-itself depends on the in-itself through an internal relation #expands (0.80) — Jean-Paul Sartre, Being and Nothingness, 1437
• The For-itself adds nothing to being except its own negation #expands (0.80) — Jean-Paul Sartre, Being and Nothingness, 652