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Seems the movie is also about the search for eternal youth.

"But is it true about eternal youth and all that?"

But what was the life of an animal, compared to the chance for eternal youth?

And eternal youth or no, who had time to recover from a thing like that?

To kill is the law, because Nature loves eternal youth.

In this new land, they were granted eternal youth and beauty.

"It gives you a kind of eternal youth," he said.

He must find a formula for the acquisition of eternal youth.

He himself designed the special tank which keeps him alive and in eternal youth.

This will no longer be a place of eternal youth and warmth.