Only a being that makes itself its own lack can introduce lack.

Evidence

Human reality by which lack appears in the world must be itself a lack. For lack can come into being only through lack; the in-itself can not be the occasion of lack in the in-itself. In other words, in order for being to be lacking or lacked, it is necessary that a being make itself its own lack; only a being which lacks can surpass being toward the lacked. — Jean-Paul Sartre, Being and Nothingness, 353

Categorization

• DEFINE: Recursive structure — the for-itself must be a lack to surpass being — is the engine of the whole system.
• XREF: Direct groundwork for the for-itself as lack and thus for the desire/bad-faith machinery; also links forward to Beauvoir’s ambiguity. — connects to: Lack is the deepest internal negation and appears only with human reality. — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 352; Possibility arises only through a being that comprehends and embodies its own possibles. — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 382; The for-itself is only the emptiness where the in-itself detaches — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 576 (+2 more)

Broader Connections

• The possible is a real lack the For-itself projects beyond itself. #corroborates (0.85) — Jean-Paul Sartre, Being and Nothingness, 387
• Possibility arises only through a being that comprehends and embodies its own possibles. #expands (0.82) — Jean-Paul Sartre, Being and Nothingness, 382
• The for-itself is only the emptiness where the in-itself detaches #expands (0.80) — Jean-Paul Sartre, Being and Nothingness, 576
• Only a being whose being is in question for itself can have a Future #corroborates (0.80)