From what movie is the quote “Too much evil makes you good”?

Question by justanotherish: From what movie is the quote “Too much evil makes you good”?
It is someone making up a potion, and they say to the person “Too much evil/bad makes you good.”

Most likely from the 80s or early 90s.

Best answer:

Answer by Cameron
I think its doctor jekel and mr hyde

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