Before I Hang (1940)
Boris Karloff: Dr. John Garth
Dr. John Garth : Someday, somehow, medical science will find a way to end the needless, ghastly suffering caused by the ravages of age!
Dr. John Garth : And when my body is brought back from the autopsy room, apply the tests that i've outlined to you.
Dr. Ralph Howard : But...
Dr. John Garth : ...and you must forget that we've worked together, that we are friends. You must go on! Learn what you can from the study of my heart, my brain, and my blood!
Dr. John Garth : There's a curtain, a wall I can't get through.