Who said "Limitation is a concept invented by the weak-minded."?

This quote is attributed to Doctor Octopus.

Limitation is a concept invented by the weak-minded. - Doctor Octopus

"Limitation is a concept invented by the weak-minded."

Doctor Octopus Strength

"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."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."