Who said "Fear is the only true enemy."?

This quote is attributed to Mark Antony.

Fear is the only true enemy. - Mark Antony

"Fear is the only true enemy."

Mark Antony Fear

General Statesman Ancient Rome 83–30

"I came, I saw, I conquered."

"The die is cast."

"Et tu, Brute?"

"Beware the Ides of March."

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."