I INTERVIEWED Michael Moore recently for an upcoming "20/20" special on health care. It's refreshing to interview a leftist who proudly admits he's a leftist. He told me that government should provide "food care" as well as health care and that big government would work if only the right people were in charge.

Moore added, "I watch your show and I know where you are coming from. ..."

He knows I defend limited government, so he tried to explain why I was wrong. He began in a revealing way:

"I gotta believe that, even though I know you're very much for the individual determining his own destiny, you also have a heart."

Notice his smuggled premise in the words "even though." In Moore's mind, someone who favors individual freedom doesn't care about his fellow human beings.

Doesn't it stand to reason that someone who wants everyone to be free of tyranny does so partly because he cares about others?

Moore thinks respecting others' freedom means refusing to help the less fortunate. But where's the connection?

All it means is that the libertarian refuses to sanction the use of physical force (which is what government is) to help others. Peaceful methods -- like voluntary charity -- are the only morally consistent methods.

If Moore's goal is to help the less fortunate, he should preach voluntary charity instead of government action.

Surprisingly, he did show an understanding of the importance of the libertarian philosophy to America. "John, your way of thinking actually was great for this country. I mean it; it helped to found the country. It helped build us into one of the greatest nations, perhaps the greatest nation, that the earth has ever seen. Limited government, pull yourself up by your bootstraps, every man for himself, forward movement, pioneer spirit.

"That's why a lot of people in these other countries really admire us, because there's this American get up and go."

I interrupt here to point out another smuggled premise. Did you catch that "every man for himself" line? America was never about every man for himself. A free society is about voluntary communities cooperating through the division of labor. Libertarianism is far from "every man for himself."

After acknowledging that limited government helped make America great, Moore went on to say, "But I don't think that what you believe is what's going to allow us to survive."

He means that if government does not assure people health care and food, our society will disintegrate.

But why would a philosophy that was good enough to build a successful society be unsuited to sustaining that society?

Individual freedom, with minimal government, made it possible for masses of people to cooperate for mutual advantage. As a result, society could be rich and peaceful.

As the great economist Ludwig von Mises wrote, "What makes friendly relations between human beings possible is the higher productivity of the division of labor. . . . A preeminent common interest, the preservation and further intensification of social cooperation, becomes paramount and obliterates all essential collisions."

Freedom and benevolence go hand in hand.

John Stossel is co-anchor of ABC News' "20/20" and the author of "Myths, Lies, and Downright Stupidity: Get Out the Shovel -- Why Everything You Know is Wrong."