Who said "A real man doesn't know how to admit defeat in his heart!"?

This quote is attributed to Luffy.

A real man doesn't know how to admit defeat in his heart! - Luffy

"A real man doesn't know how to admit defeat in his heart!"

Luffy Strength

"I'm gonna be King of the Pirates!"

"A man's dream will never die!"

"I don't care what happens to me, I'm gonna help my friend!"

"Being alone is better than being with the wrong people."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."