Well, I wasn't meaning "sample" in a literal sense, but in a metaphorical one. A note-for-note sample of the Ode to Joy melody would hardly have fit the rest of the theme. And if, as you say, the cadence matches, might it not be a stretch to assume Hermann didn't
think of Beethoven's motif while writing the Psycho
be making something out of nothing here, but it seems to me that that'd be like a playwright composing a sentence along the lines of "I'm considering offing myself, but maybe I shouldn't", and not
being reminded of "to be, or not to be..."