Who said "Knowledge without courage is merely theory."?

This quote is attributed to Scarecrow.

Knowledge without courage is merely theory. - Scarecrow

"Knowledge without courage is merely theory."

Scarecrow Education

"Breathe in the fear. There's nothing like it."

"Fear is a tool. When that light hits the sky, it's not just a signal. It's a message."

"Scarecrows are effective. They prey on an emotion."

"The mind is the best weapon."

"Education opens doors."

"Education opens doors to endless possibilities."

"I ain't got the education you got, bub."

"You can't put a price on history."