The Man Who Knew Too Much (1934)
Hugh Wakefield: Clive
Nurse Agnes : Relax. Keep your eyes fixed on this light. Keep them fixed. Before receiving the first degree of the seventh old ray, your mind must be white and blank. You are already feeling sleepy. Do you hear me?
Clive : Yes.
Nurse Agnes : Your mind is becoming quite blank. You feel that, don't you? Quite, quite blank.
Clive : Yes. Quite blank.