Who said "You can't just give up when things get tough."?

This quote is attributed to Knuckles.

You can't just give up when things get tough. - Knuckles

"You can't just give up when things get tough."

Knuckles Motivation

"I'm the last one standing!"

"Gotta protect this Master Emerald!"

"Nobody messes with the Master Emerald while I'm around!"

"I may not be the smartest guy, but I know what's right!"

"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."