Thelin and Spock's conversation in "Yesteryear":
Thelin: "This change in the timeline will put you in my place, yet I'm not aggrieved."
Spock: "Andorians are not known for their charity."
Thelin: "True. A warrior race has few sympathies, but one we do possess is for family. In your time plane, you will live and so will your mother. That is valuable. [Gives Spock the Vulcan salute] Live long and prosper in your world, Commander Spock."
Spock: [Returning the gesture] "And you in yours, Commander Thelin."