Lillian Gish
— Pauli Arndt
Ralph Forbes
— Carl Behrend
Ralph Emerson
— Bruce Gordon
Frank Currier
— Prof. Arndt
George Fawcett
— August Bejremd
Fritzi Ridgeway
— Mitzi Winkelmann
John S. Peters
— Fritz Winkelmann
Karl Dane
— Jan
Polly Moran
— Baruska
Billy Kent Schaefer
— Kurt
Louise Emmons
— (uncredited)
Betty Jane Graham
— Little Girl (uncredited)
Joel McCrea
— Extra (uncredited)
George Marion
— Old man in breadline (uncredited)
Leroy Boles
— Little Boy (uncredited)