This is the true lesson of our history: war, preparation for war, and foreign military interventions have served for the most part not to protect us, as we are constantly told, but rather to sap our economic vitality and undermine our civil and economic liberties.

For members of the political class, the crucial question is always: how can we push out the frontier, how can we augment the government's dominion and plunder, with net gain to ourselves the exploiters who live not by honest production and voluntary exchange, but by fleecing those who do so?

Abetted by misguided or co-opted intellectuals, the rulers weave a cloak of legitimacy to disguise their theft and hence to ease their extraction of wealth from the rightful owners.

But politicians who talk about failed policies are just blowing smoke. Government policies succeed in doing exactly what they are supposed to do: channeling resources bilked from the general public to politically organized and influential interests groups.

Until the 1930s, the Constitution served as a major constraint on federal economic interventionism. The government's powers were understood to be just as the framers intended: few and explicitly enumerated in our founding document and its amendments. Search the Constitution as long as you like, and you will find no specific authority conveyed for the government to spend money on global-warming research, urban mass transit, food stamps, unemployment insurance, Medicaid, or countless other items in the stimulus package and, even without it, in the regular federal budget.

Recipients of transfers tend to become less self-reliant and more dependent on government payments. When people can get support without exercising their own abilities to discover and respond to opportunities for earning income, those abilities atrophy. People forget - or never learn in the first place - how to help themselves, and eventually some of them simply accept their helplessness.

To continue on the road we Americans have traveled for the past century is ultimately to deliver ourselves completely into the hands of an unlimited government. We can have a free society or a welfare state. We cannot have both.