The Theory of Everything is a 2014 biographical romantic drama film which is set at Cambridge University and details the life of the theoretical physicist Stephen Hawking. It was directed by James Marsh and adapted by Anthony McCarten from the memoir Travelling to Infinity: My Life with Stephen by Jane Hawking, which deals with her relationship with her ex-husband, theoretical physicist Stephen Hawking, his diagnosis of amyotrophic lateral sclerosis (ALS, also known as Lou Gehrig's disease or motor neurone disease), and his success in physics.

The film stars Eddie Redmayne and Felicity Jones, with Charlie Cox, Emily Watson, Simon McBurney, Christian McKay, Harry Lloyd, and David Thewlis featured in supporting roles. The film had its world premiere at the 2014 Toronto International Film Festival on 7 September 2014. It had its UK premiere on 1 January 2015.

Edward John David Redmayne OBE (/ˈrɛdˌmeɪn/; born 6 January 1982) is an English actor and model. In 2014, Redmayne portrayed Stephen Hawking in The Theory of Everything, winning the Academy Award for Best Actor. The following year, he played Lili Elbe, in Hooper's The Danish Girl, for which he received a second Oscar nomination.

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