A true non-partisan, civil servant.
He left Ford, where he had been named president only 10 weeks before (and which he’d only joined to pay his wife’s medical bills after leaving academia), to be Defense Secretary at the ripe age of 44. Taking the $25K-a-year job cost McNamara $3 million in Ford stocks and options. He also happened to be a registered Republican. He later turned down LBJ’s offer to run for Vice President.

Data-driven and objective in a political environment.

• Example 1: Kennedy had argued in his 1960 presidential campaign that the strategic nuclear arsenal of the United States was less powerful than the Soviet Union’s, and that the gap was growing. McNamara took office nine days later. He recalled that “my first responsibility as secretary of defense was to determine the degree of the gap and initiate action to close it. It took us about three weeks to determine, yes, there was a gap….But the gap was in our favor. It was a totally erroneous charge that Eisenhower had allowed the Soviets to develop a superior missile force.” Per the NYT, “the estimate of Soviet forces had been a product of politics and guesswork.”
• Example 2: Despite years of investing his own career in the war, he listened to a CIA analysts’ argument of why the war should be stopped…and went on to commission a history of the war known as the Pentagon Papers, which later served as a key tool in exposing the war’s shortcomings

Saved the world.
Despite his own attestations to the contrary, it was his idea that resolved one of the closest nuclear showdowns in history, the Cuban Missile Crisis. Specifically, it was McNamara’s idea to do a secret deal whereby President Kennedy offered to withdraw U.S. missiles in Turkey if Russian Premier Nikita Khrushchev removed his warheads from Cuba — a deal which resolved the crisis.

It is inane to apply the openness and transparency of our post-Cold War, post-“nuclear era” to the 1960s, when diplomats faced unprecedented complexity and fear thanks to the introduction of nuclear weapons and the bipolar, militaristic world order. McNamara navigated his own doubts adeptly – preserving national security while at the same time, seeking the best policy to the point of being willing to alter his own point of view and go against that of the Chief Executive’s… ultimately leading to his own termination.

Human despite his brilliance.
He lived his entire life honoring the Examined Life by wrestling with the ultimate questions, such as “What makes it immoral if you lose and not immoral if you win?”

But when it was appropriate for him to be transparent about these questions so critical to a free, functional, democratic society- via his memoirs, the Fog of War documentary, the visit to North Korea in the ’90s, and frank admissions (e.g. “War is so complex it’s beyond the ability of the human mind to comprehend. Our judgment, our understanding, are not adequate.”) – he was vilified rather than vindicated….proving that when it comes to popular opinion, it doesn’t pay to be thoughtful or self-correcting.

And alas: a stud.

• Example 1: After pouring himself into the effort to eradicate global poverty heading up the highly bureaucratic and conflicted World Bank, his wife died and he hiked 140 miles up the 18,000-foot level of Mount Everest at age 65.
• Example 2: Remarries an Italian widow at age 88.

Ah Robert: was it only 53 yrs that separated us?

7/11/09 postscript: WOW just watched this incredible interview w/ Errol Morris & Charlie Rose & RM….the ultimate underscore. (and eeeikes directed by my high school friend Mike Jay to boot!)