Captain Kirk’s had an epiphany from his few minutes nearly in space after so many Gene Rodenberry Fantasy Years galivanting around the Universe: “Humans are Insignificant” he concludes.
If William Shatner were more articulate he seems to be saying, “Hey everyone! We all live on this little beautiful but endangered planet I just saw from space. We better join together to save it and ourselves as we are just little creatures on a little round rock in a vast cosmos; and its time we stopped so narcissistically pretending we are so omnipotent or we won’t survive.”