When did Luffy say: "Forgetting is like a wound.The wound may heal, but it has already left a scar."? I came across the quote online. Every site says that the quotee is Monkey D Luffy.



I was wondering if anyone could point me to an anime/manga source for the quote.
As far as I know, Luffy never said this quote.

And I am up to the Doflamingo Arc, And still never heard Luffy state this, its probably some quote made up from the fans.