He has inspired many of us with his charisma and enormous contribution to the technology world.

FORBES: Thousands Wish Steve Jobs Happy Birthday On Web Site

In contrast to Davy, with his charisma and flair, Faraday was a gentle, soft-spoken man whose lectures always put science, rather than the scientist, at centre stage.

ECONOMIST: Science

He will leave the force after more than 44 years, more than 12 of them as the longest-serving chief in department history, with a reputation as a steady strategist, a cop's cop and a loyal defender of the agency with enough charisma to doff his hat at protesters during an Occupy Wall Street demonstration in Times Square.

WSJ: NYPD Losing Its 'Four-Star General'