Drugs in Pynchon's fiction

[Terrance F. Flaherty]

Paul Mackin wrote:
> 
> On Sat, 23 Oct 1999, christopher davey wrote:
> 
> > I think there's at least one drug that Pynchon has provided unequivocal
>  endorsement of. That's MDMA: I posted the quote and asked if anyone knew
>  anything about it some time last year.
> >
> > The quote was:
> >
> > "The circuits of the brain which mediate alarm, fear, fright, fight, lust,
>  and territorial paranoia are temporarily disconnected. You see everything
>  with total clarity, undistorted by animalistic urges.  You have reached a
>  state which the ancients have called nirvana, all seeing bliss."
> > -- Thomas Pynchon on MDMA


Is this the complete quote? Where does it come from? Has
anyone confirmed that Pynchon wrote or said this? Even if he
did, its sounds more like a description of the effects of
taking the substance and not an endorsement, a
recommendation that people take it.