Who said "I don't know. I really don't."?

This quote is attributed to Holden Caulfield.

I don't know. I really don't. - Holden Caulfield

"I don't know. I really don't."

Holden Caulfield Wisdom

Character in The Catcher in the Rye

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"It kills me. It really does."

"I'm the most terrific liar you ever saw in your life."

"Phoniness kills me. It really does."

"I really do. That's the thing about me. I'm quite the sexfiend."

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."