Who said "To give up is to betray yourself."?

This quote is attributed to Zoro.

To give up is to betray yourself. - Zoro

"To give up is to betray yourself."

Zoro Perseverance

"I am not going to die. I'm going to keep fighting until I become the world's greatest swordsman!"

"Shitty glasses."

"I don't care what the world thinks. I'm going to be the world's greatest swordsman!"

"A swordsman's true path is one of solitude."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."