Who said "I really mean it. That's the thing about me."?

This quote is attributed to Holden Caulfield.

I really mean it. That's the thing about me. - Holden Caulfield

"I really mean it. That's the thing about me."

Holden Caulfield Truth

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."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."