While Spock certainly has a rich track record of memorable quotes, one phrase, in particular, came to be closely associated with him. What expression are we talking about?

Answer Live Long and Prosper

The iconic Vulcan greeting was not actually first performed by Spock in the Original Series, but, rather, by the Vulcan elder T'Pau in the episode "Amok Time". Usually accompanied by the recognizable hand gesture, the greeting came to represent the entire Star Trek universe.

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