Shinjitsu ni tōtatsu suru koto wa kesshite nai!

A somehow popular phrase said by Gold Experience Requiem (Giorno Giovanna's requiem stand) after activating it's ability "Return to zero" while Diavolo was erasing time, translates to: "You will never reach truth"
The phrase is usually used only as a reference but sometimes it can be used to hide something that you know from others, jojo fans or not.