Insiders say he may also be temperamentally more suited to the top job than Mr Winters.

ECONOMIST: American bank bosses

Do men and women who risk everything to leap into a new world differ temperamentally from those who stay home?

FORBES: Blessed Are the Hypomanic

In other words, the French temperamentally liked the idea of protest, not least as a way of snubbing Mr Sarkozy.

ECONOMIST: France

Temperamentally and ideologically, Huffington is Eun's opposite, a big, colorful personality who talks incessantly about "great journalism, " rather than external referrals and revenue per user.

FORBES: Magazine Article

It also drew into the climate debate some libertarian bloggers who fear the impact of climate policies on individual freedoms and who temperamentally distrust authorities.

BBC: Flooding in York

Some were temperamentally unsuited to be ruthless businessmen.

FORBES: Pioneers Die Broke