This is so because he has, in effect, been three different people." Greenspan started his public life brilliantly, as a libertarian thinker who said some compelling and accurate things about gold and its role in the world. An example from 1966: "This is the shabby secret of the welfare statists' tirades against gold. Deficit spending is simply a scheme for the confiscation of wealth. Gold stands in the way of this insidious process. It stands as a protector of property rights. If one grasps this, one has no difficulty in understanding the statists' antagonism toward the gold standard."
Yet everything changed a few decades later when Greenspan was put in charge of the Federal Reserve in the late 1980s, instead of applying the above wisdom, for example by limiting the bank's interference in the private sector and letting market forces determine winners and losers, he did a full 180, intervening in every crisis, creating new currency with abandon, and generally behaving like his old ideological enemies, the Keynesians. Predictably, debt soared during his long tenure.