Who said "I don't fear pain - I fear not doing enough."?

This quote is attributed to Knuckles.

I don't fear pain - I fear not doing enough. - Knuckles

"I don't fear pain - I fear not doing enough."

Knuckles Fear

"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!"

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."