For all of the late-night punch-drunkiness that eventually ensued on Twitter (well, at least on my feed), yesterday's 12-hours-plus filibuster led by Sen. Rand Paul (R-Ky.) is among the most electrifying and insipiring events in recent political memory. The point of the filibuster—which derailed a confirmation vote on John Brennan as Barack Obama's CIA head—was to call attention to the president's insufficient answers to questions about his policy of targeted killings via drones and, one assumes, other methods.

Here are three takeaways from yesterday's epic event:

1. It shows what one man can do to call attention to a hugely important issue that nonetheless is largley ignored by the mainstream media and the political establishment.

Elected in 2010, Rand Paul has rarely been the Republican—or the Democrat's—media favorite. He's been heckled big time from his own side (which initially worked against his election) and across the aisle as an irresponsible ideologue (he's a dirty tea-bagger don't you know!). Among a good chunk of his father's most devoted followers, he's been assailed as a neo-con war hawk who was willing to trim his libertarian bona fides to win favor with the D.C. party crowd. His sad-sack opponent in the general election the GOP primary, Jack Conway, set new lows with the infamous "Aqua Buddha" ad that accused Paul of everything short of devil worship; his general election opponent in the GOP primary, Trey Grayson, had already trotted out many of the same pathetic lines.

Yet since showing up in D.C., Paul has been exactly what Reason dubbed him: "The most intersting man in the Senate" who has offered specific legislation and made extended arguments for a unified vision of limited government that is not only fully within some great lines of American political tradition but urgently needed in the current moment. Senators who pride themselves on their foreign policy expertise and have free-loaded for decades in D.C. haven't made a speech as thoughtful and out-front as the one he delivered a while back at The Heritage Foundation, for god's sake.

Rand Paul didn't speak or act alone yesterday, of course—and props to the dozen or so colleagues (including a Democrat or two) who joined him on stage or otherwise engaged him. But the opthamologist from Bowling Green, Kentucky almost singelhandedly brought the news cycle to a halt yesterday by insisting that the American government answer some basic questions about how, when, where, and under what circumstances it thinks it has the right to kill its own citizens.

2. It shows the power of transpartisan thought and action. Make no mistake: Despite the presence of Sen. Ron Wyden (D-Oregon) and Sen. Dick Durbin (D-Ill.), yesterday's filibuster was a GOP-conducted orchestra. But what was most bracing and ultimately powerful thing about the filibuster was that none of the speakers exempted the Republican Party or former President George W. Bush, whose aggrandized view of executive power still roils the sleep of the Founding Fathers, from withering criticism and scrutiny. How else to explain that hard-left groups such as Code Pink were proud to #standwithrand yesterday on Twitter? The same with reliable Rand and GOP critic Eugene Robinson and many others who up until yesterday thought little of Rand Paul.

The filibuster succeeded precisely because it wasn't a cheap partisan ploy but because the substance under discussion—why won't the president of the United States, his attorney general, and his nominee to head the CIA explain their views on limits to their power?—transcends anything so banal or ephemeral as party affiliation or ideological score-settling.

The chills started early in the filibuster as Paul said things along the lines of, "If you're gonna kill people in America [as terrorists], you need rules and we need to know your rules," and "To be bombed in your sleep—there's nothing American, nothing constitutional, about that" (these quotes are paraphrases). Those are not the words of a career politician trying to gain an advantage during the next round of horse-trading over a pork-barrel project. They are the words of a patriot who puts his country first and they inspire accordingly.

3. It ties a direct line between the abuses of power and the growth of the state.

Despite using various self-identifiers over the years (he's called himself a libertarian, a conservative, a constitutional conservative, etc.) Rand Paul has always been rightly understood as an advocate of sharply limited and small government. During his Senate race, for instance, he said questions about drug legalization should be pushed back towards the states, where different models could be tried in accordance with the wishes of the people most directly affected. He presented a budget that was heavy on spending cuts that would have balanced the budget in five years. He has called for either actually declaring war on countries such as Iraq and Libya or getting the hell out. What unites his positions is a default setting against giving the federal government a free hand to do whatever it wants irrespective of constitutional limits.

A year or so ago, we were debating whether the government had the right to force its citizens to engage in particular economic activity—that was the heart of the fight over the mandate to buy insurance in Obamacare. That overreach—and the fear that a government that can make you buy something can also theoretically make you eat broccoli—was at the heart of Rand Paul's opposition to the Affordable Care Act. The Supreme Court ruled that in fact, the federal government not only has the right to regulate commercial transactions that take place anywhere in these United States, it has the right to force them to take place.

And now, we're arguing over whether the president of the United States in his role as commander in chief in an ill-defined, barely articulated "global war on terror" has the right to kill U.S. citizens without presenting any sort of charges to any sort of court. In fact, it's worse than that, since the president won't even share his rationale for what he may or may not believe with the country's legislature.

By foregounding the issues of limited government, transparency, and oversight as they relate specifically to the most obvious and brazen threat to civil liberties imaginable, Rand Paul and his filibuster have also tied a direct line to a far more wide-ranging and urgently needed conversation about what sort of government we have in America—and what sort of government we should have.

Watch this March 2011 interview with Rand Paul by Matt Welch and me: