The Ethics of Ambiguity

by Simone de Beauvoir

To attain his truth, man must not attempt to dispel the ambiguity of his being but, on the contrary, accept the task of realizing it. He rejoins himself only to the extent that he agrees to remain at a distance from himself. This conversion is sharply distinguished from the Stoic conversion in that it does not claim to oppose to the sensible universe a formal freedom which is without content. To exist genuinely is not to deny this spontaneous movement of my transcendence, but only to refuse to lose myself in it.

I like this reference, and the context of stoic positions

There is an art only because at every moment art has willed itself absolutely; likewise there is a liberation of man only if, in aiming at itself, freedom is achieved absolutely in the very fact of aiming at itself. This requires that each action be considered as a finished form whose different moments, instead of fleeing toward the future in order to find there their justification, reflect and confirm one another so well that there is no longer a sharp separation between present and future, between means and ends.