Who said "War is won in the mind before it's fought on the field."?

This quote is attributed to Mysterio.

War is won in the mind before it's fought on the field. - Mysterio

"War is won in the mind before it's fought on the field."

Mysterio War

"I'm something of a scientist myself."

"The world needs a hero, and I'm here to provide one."

"People believe what they see, and I've mastered the art of illusion."

"Success comes to those who understand the power of perception."

"Some battles are worth fighting."

"Sometimes you have to become the monster to stop the monsters."

"Skynet sent me back through time to kill you."

"War teaches us the value of peace."