Jax and Stein in “Unfinished Business”

Jax

You know, I've taken these engines apart so many times, feels like this ship is a... part of me.

Stein

It is a part of you, that you can take on whatever adventure life offers you next.

Jax

[scoffs] What adventure could be better than this one? I mean, I got to be a superhero who travelled through time changing history.

Stein

Yes, I know.

Jax

Look, I know you wanna do the whole "Grandad" thing. Smoke a pipe by the fire. But I got a whole lotta life left, and I have no idea how to fill it.

Stein

Jefferson, you are, hands down, the most gifted, capable, driven young man I've ever known. You can do anything you want to do.

Jax

Well, that's all well and good, but what I want to do is be half of a nuclear-powered superhero. And I can't do that if you don't want to.