Each For-itself exists its body in a unique way within invariant human structures.

Evidence

But a situation is not a pure contingent given. Quite the contrary, it is revealed only to the extent that the for-itself surpasses it toward itself. Consequently the body-for-itself is never a given which I can know. It is there everywhere as the surpassed; it exists only in so far as I escape it by nihilating myself. The body is what I nihilate. It is the in-itself which is surpassed by the nihilating for-itself and which reapprehends the for-itself in this very surpassing. It is the fact that I am my own motivation without being my own foundation, the fact that I am nothing without having to be what I am and yet in so far as I have to be what I am, I am without having to be. In one sense therefore the body is a necessary characteristic of the for-itself; it is not true that the body is the product of an arbitrary decision on the part of a demiurge nor that the union of soul and body is the contingent bringing together of two substances radically distinct. On the contrary, the very nature of the for-itself demands that it be body; that is, that its nihilating escape from being should be made in the form of an engagement in the world. Yet in another sense the body manifests my contingency; we can even say that it is only this contingency. — Jean-Paul Sartre, Being and Nothingness, 839 (#expands, via linked claim)

Categorization

• XREF: connects to: Individual features are contingent forms of a necessary embodied existence; The body is necessary to the for-itself yet manifests its contingency — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 839

Broader Connections

• The body is necessary to the for-itself yet manifests its contingency #expands (0.80) — Jean-Paul Sartre, Being and Nothingness, 839