Hegel
For Sartre as for Hegel, the oneself is posited on the basis of for-itself.
For the venerable tradition to which Hegel refers, the ego is an equality with itself, and consequently the return of being to itself is a concrete universality, being having separated itself from itself in the universality of the corrupt and death. But viewed out of the obsession of passivity, of its anarchial, there is brough out, behind the equality of consciousness, an inequality.
A being is equal to itself and is in possession of itself in this form; domination is in consciousness as such. Hegel thought that I is but consciousness mastering itself in self-equality, in what he calls 'the freedom of this infinite equality'.