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](http://www.merriam-webster.com/dictionary/quotee) is Monkey D Luffy.

[![enter image description
here](https://i.stack.imgur.com/6x0MYl.jpg)](https://i.stack.imgur.com/6x0MYl.jpg)

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.

