Tom Hiddleston has revealed his new film Only Lovers Left Alive made him think about what it would be like to live forever.
The Avengers Assemble actor stars opposite Tilda Swinton in indie director Jim Jarmusch's new film about two vampire lovers who have been alive for centuries.
Tom said: "The vampire thing is really a way of exploring immortality. And the question is, if you were immortal, how might that change your commitment to each other, between two people?
"So really the film is about love in the end, and time and our creative power."
The War Horse star found the role a very philosophical experience.
He added: "When I was making it, it raised an interesting question for me which is; we have a limited time on this planet and every day we face a choice as to how we use that time, and spend that time most effectively and usefully for ourselves and for the world.
"But if you had an endless stretch of time, how would you use it and what would you choose to become expert at? You could become a concert pianist, you could become a fantastic artist.
"But I found it a really interesting exploration."