To write that "Paris N'Existe Pas" is not for all tastes is to state the obvious.Robert Benayoun was a critic and he made only two movies where his fondness for surrealism shows.
Acting is very amateurish and shows once more that,while a brilliant singersongwriter ,Serge Gainsbourg was a poor actor:he appears in a supporting part ,exchanging a few fortune -cookie philosophies with the hero ,proving that there is a tenuous line between past and future . There's a very loose screenplay,in the grand tradition of the post Nouvelle Vague,there're hints at drugs and a lot of telekinesis (is it real?) and even a sentence borrowed from the great writer Jorge Luis Borges as a conclusion(?).There is the obligatory "psychedelic" trick ,which was a sign of the times:Bowman's journey in "2001",Dunning's "Yellow submarine" and even in France Clouzot's "La Prisonnière" featured this kind of trip.
People who like Rivette's stuff can have a look;the others can take to their heels.
Review by dbdumonteil from the Internet Movie Database.