When parties took their leave of each other, one party could use the phrase "Peace and long life" and still receive "Live long and prosper" as a reply. (TOS: "Is There in Truth No Beauty?" , "The Savage Curtain" ; TNG: "Sarek" , "Unification I" ) Alternately, each party could simply state to the other "Live long and prosper, (name)." (TOS: "Amok Time" ; Star Trek: Voyager various episodes) In the Vulcan language, "Live long and prosper" was pronounced "Dif tor heh smusma." (Star Trek: The Motion Picture)