Together with Frank Costello, I don't think there was ever a mobster who wielded such political power..

And he was a real gentleman apparently..

EDIT: from Wikipedia:

But perhaps the statement that best summed up Humphreys' philosophy of life was: "Any time you become weak, you might as well die".

Al Capone said of him, "Anybody can use a gun. 'The Hump' can shoot if he has to, but he likes to negotiate with cash when he can".