导演 梅尔文·勒罗伊

Marie Curie Greer Garson

Pierre Curie Walter Pidgeon

Eugene Curie 亨利·特拉弗斯

Professor Jean Perot Albert Bassermann

David Le Gros Robert Walker

Lord Kelvin C·奥布雷·史密斯

Madame Eugene Curie 梅·惠蒂

President of University Victor Francen

Madame Perot Elsa Bassermann

Dr. Becquerel Reginald Owen

Reporter 范·约翰逊

Irene Curie - Age 5 Margaret O'Brien

Narration Spoken By (voice) 詹姆斯·希尔顿

Tall Woman (uncredited) Mariska Aldrich

Man at Accident (uncredited) Tony Carson

Swedish Queen (uncredited) Ruth Cherrington

Lecturer (voice) (uncredited) 雷·柯林斯

Professor (uncredited) Guy D'Ennery

Cart Driver (uncredited) 乔治·戴维斯

Professor (uncredited) Harold De Becker

Assistant Tailor (uncredited) Franz Dorfler

Woman at Accident (uncredited) Justine Duney

Man at Accident (uncredited) Tay Dunn

Cart Driver (uncredited) William Edmunds

Board Member (uncredited) Nestor Eristoff

Man at Accident (uncredited) Al Ferguson

Board Member (uncredited) Edward Fielding

Prof. Constant (voice) (uncredited) 霍华德·弗里曼

Perot Granddaughter (uncredited) Linda Lee Gates

Perot Granddaughter (uncredited) Marie Louise Gates

Lucille (uncredited) Lisa Golm

Seamstress (uncredited) Ilka Grüning

Professor Roget (uncredited) Lumsden Hare

Son (uncredited) Teddy Infuhr

Board Member (uncredited) James Kirkwood

Woman at Accident (uncredited) Isabel La Mal

Bit Part (uncredited) 吉恩·洛克哈特

Businessman (uncredited) Miles Mander

Singing Professor (uncredited) George Meader

Master Michaud (uncredited) Dickie Meyers

Wedding Guest (uncredited) Noel Mills

Photographer (uncredited) Leo Mostovoy

Dr. Bladh (uncredited) 艾伦·纳皮尔

President of Businessman's Board (uncredited) Moroni Olsen

Woman at Accident (uncredited) María Pagés

Eve at 18 Months (uncredited) Gigi Perreau

Monsieur Michaud (uncredited) Francis Pierlot

Woman at Accident (uncredited) Nita Pike

Nurse (uncredited) Dorothy Raye

Madame Michaud (uncredited) Almira Sessions

Businessman (uncredited) Arthur Shields

King Oscar (uncredited) Wyndham Standing

Driver (uncredited) Ray Teal

Board Member (uncredited) Charles Trowbridge

Proud Papa (uncredited) Michael Visaroff

Jewelry Salesman (uncredited) Marek Windheim

Businessman (uncredited) 弗莱德里克·沃洛克

Doctor (uncredited) Eustace Wyatt