Who said "To surrender is to admit defeat in the mind first."?

This quote is attributed to Doctor Octopus.

To surrender is to admit defeat in the mind first. - Doctor Octopus

"To surrender is to admit defeat in the mind first."

Doctor Octopus Perseverance

"The cunning warrior attacks neither body nor mind... but the HEART."

"I'm something of a scientist myself."

"Back to formula!"

"You know, I'm something of a scientist myself."

"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."