Who said "Every moment of doubt is a moment to prove yourself."?

This quote is attributed to Zoro.

Every moment of doubt is a moment to prove yourself. - Zoro

"Every moment of doubt is a moment to prove yourself."

Zoro Motivation

"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."

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."