The following text is not just unpublished. There is something intimate, secret, confidential about it. It consists of a series of notes - classed from A to H - that Gilles Deleuze had entrusted to me in order that I give them to Michel Foucault. It was in 1977. Foucault had just published La Volonté de savoir, the introduction to a Histoire de la Sexualité which challenged the play of categories through which the struggles of sexual liberation reflected itself. The (...) reception of the book, poorly understood, was contemporary with a sort of crisis in Foucault, already wholly bent to the task of bringing out of himself, and converting himself to, what would become the problematic of L'usage de plaisirs and the Souci de soi. Gilles Deleuze, sensitive to what he perceives as a suffering in his friend, thus writes up these notes: therein he gives the account of his convergences and divergences with Foucault. It is not a matter of a critique, even less of a polemic, but of an invitation, entirely imbued with the sincerity of friendship, to take up again a dialogue which had been interrupted. (shrink)