[Well, the pieces were falling into place now. He thinks back to a discussion he had with Kirk about the Romulans. He'd been drilling Vegeta about the Saiyans, comparing them possibly to the Romulans. He wonders if anything ever came about from that, and perhaps that's why he's dead back in their world.]

It's not going to do you any good to dwell on it. What's done is done, and now, while you are here, he's alive. So be thankful for that.