Vulcan salute Leonard Nimoy for the "Star Trek" episode "Amok Time", which was the first episode with Vulcans other than Spock. Nimoy wanted something to help develop the Vulcans sociologically and suggested that Vulcans have a gestural greeting. He then proposed the (now globally-recognized) sign. The accompanying spoken blessing, "live long and prosper" – ""dif-tor heh smusma"" in the Vulcan language (as spoken in "") – also appeared for the first time in "Amok Time", scripted by Theodore Sturgeon. The less-well-known reply is "peace and long life", though it is sometimes said first, with "live long and prosper" as the reply. The
Prosper, Texas Railroad in March 1902. For years, Prosper was the central stop for the railroad between Dallas and Sherman. When community officials applied for a Post Office with the name "Richland," they were informed that city name was already taken. Postmaster B.J. Naugle asked for an alternative name and J.C. Slaughter suggested the name "Prosper," because crops that year had been very prosperous. The Town of Prosper was incorporated in 1914 with a commission form of government and a population of 500. U.N. Clary was Mayor and served in that position for the next 49 years. Prosper was named in the