He gets it, and he eloquently explains the importance of idealism “in the service of realism.”

Yet the striking thing about Obama, and the enthusiasm he has stirred up, has little to do with the specifics of the policies he advances. It is rather his almost pitch-perfect echo of the John F. Kennedy we heard in 1960 and the Robert Kennedy last heard in 1968. It is a call for national unity and national sacrifice — not in the interest of military prowess but in the cause of social justice, both in the nation and around the world. His appeal is for more civic engagement, not necessarily more government. He has the voice and wields the techniques of a community organizer (which he was on the streets of Chicago), asking people to join together, calling the nation to form a more perfect union. Not since the sixties has America been so starkly summoned to its ideals. Not since then has America– including, especially, the nation’s youth –been so inspired.

It is easy for cynics to write off Obamania as a passing fad, as lofty rhetoric that can’t and won’t hold up on close inspection — another bout of the kind of naive and romantic enthrallment that occasionally claims American voters until common sense sets in. This is surely what Hillary Clinton and my friend from forty years ago are counting on. But if the Clintons stop to think back to what they felt and understood in those years leading up to 1968, they may come to a different conclusion, as have I.

Neither John F. Kennedy nor his brother Robert were idealists. They were realists who understood the importance of idealism in the service of realism. They grasped the central political fact that little can be achieved in Washington unless or until the public is energized and mobilized to push for it; the status quo is simply too powerful. The ideals they enunciated helped mobilized the nation politically. That mobilization contributed to the subsequent passage of civil rights and voting rights laws, Medicare, and environmental protection. For purposes of practical electoral strategy as well as high-minded moral aspiration, they never tired of reminding the nation of its founding principles — most fundamentally, that all men are created equal.