From Star Trek : Creator - The Authorised Biography of Gene Roddenberry
In a letter to fans, discussing the decision to kill off Spock in TWOK, he talks about the future of Star Trek and how the franchise could go on without Nimoy and the others.

In a letter to fans, discussing the decision to kill off Spock in TWOK, he talks about the future of Star Trek and how the franchise could go on without Nimoy and the others.
So, for all of you who still dont think this new movie is a good idea (i'll admit - there don't seem to be too many complaning these days) I shall type out this smileyEven if Nimoy never plays Spock again, I think it would be wonderful years from now to see Star Trek come back with an equally talented new cast playing Spock and Kirk and Bones and Scotty and all the rest as they say tomorrow's things to tomorrow's generations...
