The Infinite Vulcan ( episode ) A species of intelligent plants , led by a clone of a Eugenics Wars - era scientist , clones Spock with the intentions of creating a master race to keep the peace . Summary . A landing party beam s down and they discover an apparently abandoned city that gives off confused life and power readings . While the away team is exploring the city , Sulu picks up a mobile plant that is following him around and is poison ed . Spock discovers that they are being scanned . As Dr . McCoy tries to save Sulu without much hope , the alien inhabitants of the planet approach the landing party and save Sulu ' s life . The alien creatures , who are intelligent plantlike beings , welcome the crew to the planet Phylos . A Phylosian called Agmar tells Captain Kirk they did not wish to reveal themselves at first because they are a peaceful race and have a fear of aliens . McCoy asks , " " How is it that you knew your antidote would work on a Human ? " " Agmar answers , " " There have been humanoid aliens here before . " " He adds that a visitor came and the poison that affected Sulu was accidentally brought to the planet by this Human . It was like a plague , and they had no idea what was happening . The plague brought sickness and death to them but the Human subsequently worked to find a cure . They are a dying race ; for the five surviving intelligent Phylosians are sterile . The landing party is attacked by bat - like flying creatures , also plant - based . When Sulu tries to shoot them with his phaser and fails , Agmar tells them that there is a weapon deactivator in effect preventing their " destructive machines " from functioning . Spock is quickly abducted by the creatures and Agmar apologizes , claiming that there was no other way . He explains that Spock has been chosen to serve a greater cause : " " The Master has searched many years to find a specimen like Spock , and now all the worlds of the galaxy will share in the beauty of peace and harmony ! " " As Kirk angrily demands to be taken to Spock , the Phylosians chant , " " Praise to the Master , our Savior ! " " The landing party eventually meets that visitor and discovers that he is a Terran scientist by the name of Dr . Stavos Keniclius 5 . He claims Spock ' s essence belongs to him because he wishes to clone Spock to create a galactic peacemaker . Keniclius demands that Kirk return to his ship , but Kirk refuses to go without his first officer . Keniclius tells him to leave or suffer the consequences . Reluctantly , Kirk has himself and the landing party beams up . On the bridge of the " Enterprise " , Uhura finds a story about a modern Diogenes wandering the galaxy looking for someone special – a perfect specimen . Stavos Keniclius , it proves , originally lived during the Eugenics Wars , but left Earth after " losing " a bitter disagreement with Earth authorities over the need ( his view ) , or lack thereof ( the Earth authorities ' view ) , for a genetically superior master race to keep the peace . Kirk realizes that the original Dr . Keniclius has died , but also that he has left behind a clone of himself , by the name of Keniclius 5 , to take his place , and that this clone has , through the original Keniclius ' scientific specialties , eugenics and manipulative endocrinology , been deliberately grown to gigantism over , to date , four consecutive generations after the original Keniclius ' death as a normal - sized Human . Kirk beams down and orders Scott to take the ship out of orbit , hoping the Phylosians will think they have left . Kirk finds Agmar and tries to convince him that they need Spock back . Agmar refuses , but offers to show Kirk that he is in good hands . Keniclius 5 has already cloned Spock , a process which leaves the Vulcan at the edge of death , and proudly unveils his perfect being Spock Two . The giant clone is confused and unresponsive at first , as his mind is still sorting itself out from all the information it has just been given . Kirk realizes that the only way to save Spock is to recite aspects of Vulcan philosophy on life and death , such as the concept of the IDIC . Kirk convinces the clone that the Federation is " already " peaceful , which happened through their own efforts , not by having peace forced on them . Vulcan philosophy would never allow Spock Two to impose his will on other beings . Spock Two saves the original Spock ' s life using a Vulcan mind touch . Spock Two decides to remain on the planet with Keniclius and find a way to revitalize the dying Phylosian civilization . Memorable quotes . " " They ' re all over the place . I think it likes me . " " " " We always encourage our officers to make friends with the natives . " " " " Now , just a minute ! I can ' t let you , whatever you are , inject him with some – alien dewdrop ! " " " " To wait is to assure your friend ' s death . I must proceed . " " " " Captain , these beings are of botanical origin . " " " " Intelligent PLANTS ? ! ? " " " " So it would seem . " " " " Readings indicate the beings used almost 70 % of their brains – a very high ratio . " " " " I am Doctor Stavos Keniclius 5 . Welcome to Phylos , Captain Kirk . " " " " Where is Mr . Spock ? " " " " He is mine . The essence of him is mine . Return to your ship . Here is your communicator . Go back to your ship . " " " " Not without my first officer ! " " " " I am sorry , captain . You will leave now , or suffer the consequences . " " " " Kirk to " Enterprise " . Beam us up , Scotty . " " " " It is too late , Captain Kirk ! In a few minutes your friend will be gone . But as Keniclius 1 lives on in each of his clones , so will Mr . Spock . Behold , gentlemen , the dawning of a new era . . . the salvation of a galaxy . . . Spock Two ! ! " " " " Well , how ' bout that . Great - granddaddy ' s weed spray still works . " " " " You talk about creating " life " with your clones ! But you have to murder to do it ! " " " " Spock , what is the logic in letting a man die for the sake of creating his duplicate ? Explain it to me , sir – " explain " it to me ! " " " " All this has been a waste , Keniclius . There ' s been peace in the Federation for over one hundred years . " " " " That is a lie . What about the Eugenics Wars ? The galactic wars ? What of the depredations of the Romulans , the Klingons and the Kzinti ? An army of Spock duplicates is necessary to subdue them . " " " " You ' re the fifth Keniclius . What make you so sure what you believe is truth isn ' t just old news ? Your predecessors could have been out of touch with our advances for two centuries . " " " " The Master always speaks the truth . " " " " Murderer ! You ' ve killed Spock ! " " " " By the way , Mr . Sulu , any chance of teaching me that body throw ? Could come in handy some time . " " " " I don ' t know , sir . It isn ' t just physical , you know . You have to be inscrutable . " " " " Inscrutable ? ! ? Sulu , you ' re the most scrutable man I know . " " Links and references . References . 2160s ; 2060s ; 2010s ; bacteria ; belt light ; body throw ; " Bones " ; chemical sprayer ; clone ; club ; dew ; dilithium ; Diogenes ; dylovene ; Earth ; essay ; Eugenics Wars ; Federation ; Galactic Wars ; ( great - ) great - granddaddy ; Humanism ; IDIC ; Klingon s ; knife ; Kzinti ; lead ; library ; logic ; master race ; McCoy ' s ancestor ; medkit ; meter ; migration ; militia ; Milky Way Galaxy ; murder ; Phylos ; Phylosian s ; Phylosian starship ; recipe ; Retlaw plant ; Romulan s ; soil ; spore ; Staphylococcus ; swooper ; thorn ; tight beam transmission ; tunnel ; voder ; Vulcan s ; Vulcan mind touch ; weapons deactivator ; weed spray