They alone are the universal constant.
Shatner's lines from the new Star Trek film, excerpt from the script:
KIRK/SHATNER (VOICE OVER):
I suppose I’d always imagined us… outgrowing Starfleet together. Watching life swing us into our Emeritus years…
I look around at the new cadets now and can’t help thinking… has it really been so long? Wasn’t it only yesterday we stepped onto the Enterprise as boys? That I had to prove to the crew I deserved command… and their respect? I know what you’d say - ‘It’s their turn now, Jim…’ And of course you’re right… but it got me thinking: Who’s to say we can’t go one more round? By the last tally, only twenty five percent of the galaxy’s been chartered… I’d call that negligent. Criminal even - an invitation.
You once said being a starship captain was my first, best destiny… if that’s true, then yours is to be by my side. If there’s any true logic to the universe… we’ll end up on that bridge again someday.
Kirk and Spock are canon. I know it, you know it, and the writers over at Paramount know it. Why did this scene not happen? Damn Paramount should've tried harder.