Frank Baxter
饰 Himself (as Dr. Frank C. Baxter)
Hadley Cantrell
饰 Himself - Princeton University Psychologist (as Professor Hadley Cantrell)
Wilder Penfield
饰 Himself - Director: Montreal Neurological Institute (as Dr. Wilder Penfield)
Peter Brown
饰 Aristotle's student (uncredited)
Karl Swenson
饰 Hal - the Cameraman (uncredited)
