 Nimoy wrote that The Search for Spock 's major theme is that of friendship . " What should a person do to help a friend ? How deeply should a friendship commitment go ? ... And what sacrifices , what obstacles , will these people endure ? That 's the emotion line of the film [ and ] its reason for existence , " he recalled . While Spock 's bodily resurrection was complete , his mind was a blank slate — The Search for Spock , Michele and Duncan Barrett argue , says that the important question is whether an individual 's mind functions , as this is the key to a meaningful existence . 
