He is self-confident, which is not unusual in a senior politician.

BBC: Obama victorious, but not yet the master politician

He is a self-confident fellow, although his sense of humour protects him from arrogance.

ECONOMIST: Don��t be vague

He is self-deprecating, yet confident.

NPR: In Obama, Americans See Promise Of A New Start

One clear message we can draw from Mr Lew's selection is that President Obama feels more self-confident now than he did four years ago, at least when it comes to picking his top economic officials.

BBC: Obama puts a trusted man at the Treasury