The above quotation is Greenspan's.
I learned this from today's Cato Institute's "Cato Today" email blast taken from an essay, "Obama's Arrogance of Power," by Gene Healy.
Cato's synopsis of the article: "Last year's financial meltdown rightfully destroyed former Federal Reserve Board Chairman Alan Greenspan's reputation as an infallible "wise man," but he said something wise in his 2007 memoirs, describing a constitutional amendment he'd been "pushing for years." Wrote Greenspan: "Anyone willing to do what is required to become president of the United States is thereby barred from taking that office. I'm only half joking." It's no laughing matter. After all, what sort of person wants the job badly enough to spend years living out of a suitcase, begging for cash, glad-handing through primary states, and saying things that no intelligent person could possibly believe? Greenspan's point was that people who seek the presidency today display a pathological power lust that ought to make us uncomfortable, given the powers the modern president enjoys. George Washington was called "the American Cincinnatus," after the Roman hero who took power reluctantly and returned humbly to his plow when crisis passed. That's the model Americans once expected presidents to follow. Things have changed, and not for the better."
I sympathize with Greenspan. But my idea is a little different: We need a Constitutional amendment that would require anyone running for president to have actually held a private-sector job, you know, to have worked under the yoke of the U.S. Government's laws. I mean, "community organizer?" Really? Hassling the government for money is NOT a real job.