For me the voice is the most important, but making your singing believable makes a great performer.
“Even when I was at CIA, I'd go to visit foreign leaders and I'd say, 'You know, I'm not a diplomat. I'm just an old CIA guy'... I said, 'If I wanted to be diplomatic, I'd have been a diplomat.'”
“If inflation-adjusted interest rates decline in a given country, its currency is likely to decline.”