Who said "The greatest prison is the mind that accepts limits."?

This quote is attributed to Doctor Octopus.

The greatest prison is the mind that accepts limits. - Doctor Octopus

"The greatest prison is the mind that accepts limits."

Doctor Octopus Freedom

"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."

"Freedom to pursue your passion is precious."

"Freedom comes at a cost."

"Order isn't restriction. It's freedom."

"Freedom comes with responsibility"