Thislong-lostmasterpieceofhardcoregayeroticcinemacentersonahandsomeyoungstudwhorideshismotorcyclethroughmyriadsexualencounters,fromasoccergame’slockerroomtoaphantasmagoricanddeeplymelancholyorgy.Alabyrinthofall-malefantasieswhoseoutstandingbeautiesalwaysendupfadingawaywhileleavingtheirsensualprotagonistdealingwithhisownloneliness,EQUATIONwasdirectedwithsupremegracebythemysteriousDietrichdeVelsa(akaFrancisSavel/FrantzSalieri).Aformerpainter,deVelsawasalsotheownerandartisticdirectorofLaGrandeEugène,oneofthefirstdragcabaretsinParis.Yearslater,hecollaboratedwithJosephLoseyonMR.KLEIN(1976)andDONGIOVANNI(1979).Hisoneandonlyfilm,EQUATIONTOANUNKNOWNstandsasoneofthemostextraordinaryeroticfilmsofalltime.                  
                “ThemostmelancholicpornfilmI’veeverseen.It’sverysad,andaestheticallybeautiful.Justayoungmanwanderingthroughseveraldepictionsofloveandchoreographiesoflove-making;it’slikeaceremony,aceremonyoffantasies,especiallythelastsequencewherethemaincharacterrecallsallhispreviousfantasies,whichcomeonebyonearoundhisbedandmakelovetohim.Ithinkit’soneofthemostbeautifulfilmsequencesofFrenchcinema.”–YannGonzalez