Abstract qualities are future possibilities the For-itself has to be

Evidence

Possible (possible). A noun almost equal to “possibility.” Sartre generally prefers “possible” which signifies a concrete action to be performed in a concrete world rather than an abstract idea of possibility in general. The For-itself makes itself by choosing its possibles and projecting itself toward those preferred. — Jean-Paul Sartre, Being and Nothingness, 1509 (#expands, via linked claim)

While we have had to proceed in this way for the sake of clarity in exposition, we should not thereby conclude that being is revealed to a being which would be first presence in order afterwards to constitute itself a future. But being-in-itself is revealed to a being which arises as about-to-come to itself. This means that the negation which the for-itself makes itself be in the presence of being has an ekstatic dimension of the future; it is in so far as I am not what I am (an ekstatic relation to my own possibilities) that I have to not-be being-in-itself as the revealing realization of the this. That means that I am presence to the “this” in the incompleteness of a totality detotalized. — Jean-Paul Sartre, Being and Nothingness, 604 (#expands, via linked claim)

Categorization

• XREF: connects to: Abstract quality is apprehended in the future mode, correlative with negation; Qualities’ meaning requires the for-itself’s nihilating mediation to exist; Possibility is a concrete property of already existing beings, not a subjective construct — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 378 (+4 more)

Broader Connections

• The for-itself constitutes itself by choosing and projecting concrete possibles #expands (0.88) — Jean-Paul Sartre, Being and Nothingness, 1509
• Qualities’ meaning requires the for-itself’s nihilating mediation to exist #expands (0.85)
• The for-itself’s negation of being has a future-extending ekstatic dimension #expands (0.85) — Jean-Paul Sartre, Being and Nothingness, 604
• Perceived qualities exist objectively as the thing itself, not as subjective effects #contradicts (0.82) — Jean-Paul Sartre, Being and Nothingness, 594
• Possibility is a concrete property of already existing beings, not a subjective construct #contradicts (0.80) — Jean-Paul Sartre, Being and Nothingness, 378