"There ain't no such thing as a tough guy. What's a tough guy?"
"I don't know."
"A guy with an edge. What makes a singer sing better than me? Something in his throat. What makes it loud? A microphone. That's his edge."
"A gun or a knife, a nightstick, or a razor, something the other guy ain't got. Yeah, a little extra reach on a punch, a set of brass knuckles, a stripe on the sleeve, a badge that says cop on it, a rock in your hand, or a bankroll in your pocket. That's an edge, brother.
Without an edge, there ain't no tough guy."
from Orson Welles' The Lady from Shanghai