[Foucault-L] Foucault quotation

Hi,

I'm working on a paper about the concept of 'diagnosis' in Foucault at the 
moment, and I'm trying to locate a remark Foucault makes in an interview 
stating his preference for the Nietzsche of Genealogy of Morality over the 
Nietzsche of Thus Spoke Zarathustra. Does anyone know in which interview I 
might find this comment? I've spent ages looking through the edited 
collections of interviews, but to no avail; I've even 'googled' it, without 
any luck. Maybe it was all just a dream...

Any help would be much appreciated.

Regards,
Nick

University of Leicester, Management Centre