Who said "I'm quite certain that I don't know what you mean."?

This quote is attributed to Hannibal Lecter.

I'm quite certain that I don't know what you mean. - Hannibal Lecter

"I'm quite certain that I don't know what you mean."

Hannibal Lecter

Character in The Silence of the Lambs

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"A census taker once tried to test me. I ate his liver with some fava beans and a nice Chianti."

"We covet what we see every day."

"You know what you look like to me, with your good bag and your cheap shoes?"

"I do wish we could chat longer, but I'm having an old friend for dinner."