Down to Earth, (aka The Optimist) (1917 Silent Comedy Romance film)

Down to Earth, also known as The Optimist, is a 1917 American comedy romance film starring Douglas Fairbanks and Eileen Percy and directed by John Emerson. Most of the principal photography was filmed in Yosemite National Park.

Synopsis
Bill Gaynor (Fairbanks) follows Ethel (Percy), the girl he loves, to a sanitarium she is staying to recuperate from a nervous breakdown. Ethel had previously refused his proposal in favor of a socialite, Charles Riddles (Charles K. Gerrard). Bill hatches up a plan to save Ethel and the other hypochondriacs from the sanitarium, taking them on his yacht through the ruse of a smallpox scare. The yacht crashes onto an island, where Bill makes the invalids work for their own food and where they all overcome their illnesses.

Cast
Douglas Fairbanks as Billy Gaynor
Eileen Percy as Ethel Forsythe
Gustav von Seyffertitz as Dr. Jollyem
Charles McHugh as Dr. Samm
Charles K. Gerrard as Charles Riddles
William H. Keith as Mr. Carter
Ruth Allen as Mrs. Fuller Jermes
Fred Goodwins as Jordan Jinny
Florence Mayon as Mrs. Phattison Oiles
Herbert Standing as Mr. SD Dyspeptic
David Porter as Mr. Coffin
Bull Montana as Wild Man