Hank Paulson, obviously, had spent his career on Wall Street, had a deep knowledge of the Street, and also was a very forceful personality, had a very good relationship with the president, and was in a very different place, for example, than Ben Bernanke, who is an academic, quiet guy: spent most of his time thinking about monetary policy.
Boldness doesn't mean rude, obnoxious, loud, or disrespectful. Being bold is being firm, sure, confident, fearless, daring, strong, resilient, and not easily intimidated. It means you're willing to go where you've never been, willing to try what you've never tried, and willing to trust what you've never trusted. Boldness is quiet, not noisy.