"The tango is a very interior dance. It's not an exterior - it's not flashy and all over the floor. It's a very interior dance when you see the old guys dance in the clubs. I learned everything from the old guys in the clubs."
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Source : "If You Hire Robert Duvall Not to Flinch, He Damn Well Won't Flinch". Interview with Eric Spitznagel, www.esquire.com. May 16, 2014.