Pushing ahead, Donald Rumsfeld hits comeback trail
Donald Rumsfeld, who went from matinee idol to political liability over the arc of former President George W. Bush’s first six years in office, is mounting an unlikely comeback as best-selling author, amateur historian, social-media dabbler and in-demand talking head. His memoir, “Known and Unknown” — covering his kaleidoscopic career from three-term congressman to White House chief of staff to both the youngest and the oldest secretary of defense — spent eight weeks on The New York Times’s best-seller list, hitting No. 1.
That there are known knowns,
There are things we know that we know,
There are known unknowns,
That is to say there are things that we now know, we don't know
But there are also unknown unknowns,
There are things we do not know we don't know
And each year we discover a few more
Of those unknown unknowns.
—Feb. 12, 2002, Department of Defense news briefing [Source]