Listen to the sound clip Lithium. from Infinitely Polar Bear (2014): Lithium. Lithium. This sound is from Infinitely Polar Bear (2014) Infinitely Polar Bear is a heartwarming and honest drama film directed by Maya Forbes in 2014. It tells the story of Cameron Stuart, portrayed by Mark Ruffalo, who struggles with bipolar disorder. Set in the 1970s, the film take… Go to the full soundboardwith more sound clips Search