By analyzing Foucault’s inquiry on subjectivity, this paper attempts to demonstrate the singularity of his philosophy and to confirm (or reconfirm) his most important gesture as a contemporary philosopher. In brief, Foucault rewrites “the identity of being with thought” of Parmenides through experiences of limit such as literature, sexuality, death or madness. However, in this modern version signed by Foucault, being becomes a being freed of itself, while thought is always conceived otherwise; the only identity between the two lies in their revealing and only revealing the power of difference. The eternal return of difference or otherness. With the power of constant repetition of difference, Foucault does not intend to unveil some kind of invisibility: not to make it visible but, to the contrast, to demonstrate how the invisibility is invisible. Besides, it is exactly in this absolute invisibility of the invisible that fiction bursts forth its greatest power. Philosophy can only be a fiction and it’s exactly in this sense that Foucault declares without hesitation that “except fiction, nothing has been written.”

Key words: Michel Foucault, subjectivity, alternative thought, the outside, fiction, death, madness, invisibility.

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