While Spock was contemplating life in general, it is easy to see, in his assertion that people die alone, that he was predicting his own death. In the late 24th century, the Romulan Empire was ...

In "Yesteryear", written by D.C. Fontana, Spock goes back in time to prevent his own death as a child. Spock's memories of a distant relative, Selek, turn out to be Spock himself, as Spock closes ...